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Full interview with Lutfur Rahman, mayor of Tower Hamlets

“I don’t believe we have extremist groups in Tower Hamlets”

How has your Bangladeshi heritage shaped you?
I think it gave me a sense of collective responsibility and stability, and the importance of being part of a community, a society. But I soon became part and parcel of the East End of London, growing up here in the 1970s.

What is your priority as Tower Hamlets mayor?
My top priority is more housing, to help the 23,000 people on the housing waiting list.

But what can you, as a mayor, do to solve the housing shortage?
We have to continue to build more homes and work with various stake holders: with private investors, with developers and, yes, with central government, in terms of trying to lever in more money, identify the land and deliver on our targets. We will take advantage of all the opportunities that exist.

But your own former council colleagues in the Labour Party won't work with you, will they?
Well, three Labour councillors have already come out and joined me. There are many more Labour councillors who will want to work with the mayor of Tower Hamlets and serve the community of Tower Hamlets.

What is your response to the two mayors of so-called Olympics boroughs, Robin Wales and Jules Pipe, who have said they won't work with you?
Tower Hamlets is one of the five Olympics boroughs but my borough is not run at the behest of any of the leaders of the four other boroughs. I will stand up for my borough and deliver for my borough. When I was a leader of the council, for example, we passed a motion in full council calling for 50 per cent of the Olympics village to be converted into socially affordable housing.

Will you be reaching out to those two mayors, and to your other critics?
I believe in consensual politics, that you work collectively, you work together with others. I will work with whoever wants to work with me but the people who are important are the people of Tower Hamlets: the people who voted for me and even the people who didn't vote for me, they're also important. I'm here to serve the people of Tower Hamlets. Whatever other mayors say, that's their prerogative. I'm not interested in that.

You've been accused of appointing only Asians, only people from a Bangladeshi background, to your team. Are you discriminating against white people?
The senior management team of this council, excluding one member, is all white. So for anyone to make such assertions is unfair. I believe in a meritocracy. People get jobs in this council based on ability. There is a clear recruitment process in place

The chief executive of this council is a white gentleman, Kevan Collins, whom I appointed during my council leadership. My cabinet, during that period, had white members. If people want to work with me, I welcome them to do so. Two days after I was elected as mayor, I sent out an email to each and every member of the Labour group on the council inviting them to come and work with me in my cabinet. Unfortunately, the following Monday, they convened and, by a slender majority, passed a motion not to work with me. So what I am supposed to do? Of course I want race to be reflected, gender to be reflected, ability to be reflected in my cabinet.

You were deselected as Labour's candidate for mayor after criticism of your conduct. Why did you stand as an independent against Labour?
I was elected as the candidate by 433 members of Tower Hamlets Labour Party. All I wanted was that the members should assert their right and decide who led them. If they had chosen someone else, I would have fallen behind that person and served the party loyally.

A small clique in the NEC, only seven or eight members, decided to get rid of me on the basis of a dossier based on false allegations, hearsay and unsubstantiated allegations. We live in a democracy where the rule of law prevails; I am a lawyer and they should have given me a chance to refute the allegations against me in front of an independent panel. I am sure I would have disproven each and every allegation. What's so sad is that they then didn't impose the candidate who came second, John Biggs, but instead imposed the candidate who came third, Helal Abbas, who made these false allegations against me in that dodgy dossier and who received only 117 votes.

It has been suggested that the NEC picked Helal Abbas over John Biggs because it wanted a non-white candidate in Tower Hamlets. Do you agree?
It could be one of the factors. But it was the wrong decision to make. They shouldn't have got rid of me in the first place. I would have won the election for Labour by an overwhelming majority.

It has been suggested that one of the reasons you were removed by the NEC as the Labour candidate is because you refused to back Rushanara Ali, Labour's parliamentary candidate in Bethnal Green and Bow at the general election in May?
In 2007, I stood for the Bethnal seat and I lost by a very small number of votes to Rushanara Ali. But I fell behind her and I supported the Labour Party in the general election. It is not true that I didn't work for her. I went out to all corners of the borough campaigning for Rushanara. And I don't believe she has said I never campaigned for her; she has never said it to me. When she went to Brick Lane mosque, just before the election, I stood up on camera, in front of everyone there, and made a speech supporting her. If Harriet Harman and the NEC had asked me for the facts, I would have given them the facts.

So if it wasn't your conduct or behaviour, what do you believe is the real reason the NEC removed you as the mayoral candidate then?
I don't know. All I can say is this: the people of Tower Hamlets last month made their voice heard. By an overwhelming majority they voted for me and my team and they voted for justice. At the end of the day, the final judges were the people of Tower Hamlets.

Were you behind the various smears against your opponent that appeared in a local paper?
For the record, none of my team was associated with any local paper, formally or informally. The stories that the local papers carry is their choice. It has nothing to do with me.

Were you disappointed to see such smears about a former colleague and friend?
I am not going to make comments about Councillor Abbas's private life either this way or that way. None of my literature contained negative stories. My literature was about my policies and the positive aspects of my campaign.

Who funded your mayoral campaign, and your various legal fees?
I funded my own campaign. And I funded my legal fees too from my own pocket. Listen, I am a lawyer. I was a solicitor for many years, a partner in my firm. I worked hard my whole life.

Have you had any discussions with Ed Miliband about rejoining the Labour Party?
The whole of my political upbringing has been on the basis of Labour values. I want to serve the community on a progressive agenda but I have not had any conversations with Ed Miliband.

Would you like to rejoin the Labour Party in the near future?
I am happy to serve the people of Tower Hamlets. They will decide how I serve them.

Is it true that Ken Livingstone has been negotiating your return to the Labour Party?
I have a lot of respect for Ken Livingstone. As to what discussions he is having with anyone, that is between him and that person. I have not appointed anyone to enter into any such conversations on my behalf.

Why did Ken come to campaign with you?
You'd better ask him. He is an astute politician.

How would you describe your own politics?
I believe in social democracy, in equality of opportunity, in social justice, in the welfare state. I believe we must have a system, democracy, that caters for all.

Are you a social democrat or a socialist?
I am a social democrat; I'm left of centre.

Who are your heroes, political or otherwise?
Tony Benn. I have a lot of respect for him.

Who did you back for the Labour leadership?
David Miliband. But I thought Ed Miliband was an equally able candidate. I am sure he will make a great prime minister.

But he tried to get rid of you from the party?
He didn't get rid of me. He was in the middle of a leadership campaign. Six or seven members of the NEC got rid of me. I believe it would have been different had he been leader at the time.

Will you stand as a parliamentary candidate in the East End in 2015?
My only intention is to serve people of Tower Hamlets. I was grateful to be given the chance to serve as a local councillor and now as mayor. My only determination now is to succeed in my mayoralty.

So you won't rule out standing against the local Labour MPs, Rushanara Ali or Jim Fitzpatrick, at the next general election?
At this stage, all I can think about is building more homes, making sure our schools perform, making sure we have a borough where crime is low, and making sure the whole community is served equally. That's all I'm interested in.

How important is your Islamic faith to you?
I am a proud Muslim. I am glad that my values have come from Islam. But I am also glad that Labour Party values have given me great strength over the past 20 or 25 years. Go and speak to people of Tower Hamlets, the people who voted for me, who voted for someone they believe is a pluralist and can serve them well and serve them equally.

Are you a member of the much-criticised Islamic Forum of Europe?
I am not a member of the Islamic Forum of Europe. I have never been a member.

But you do have close contacts with the group?
I have close contacts with the chair of the Tower Hamlets Inter Faith Forum, with rabbis, with the Bishop of Stepney, with people who are of no faith. The IFE is one group among many. As leader of this council, I will work with each and every member of the community, whether they are Sikh, Hindu, Muslim, Jew, Christian or people of no faith.

Is the IFE an extremist group?
I don't believe we have extremist groups in Tower Hamlets. If so, I am sure the government and the police would have intervened long and ago. I will work with anyone who adheres to civil society, to democracy, to the progressive values of this council. I believe that previous leaders have worked with the IFE and other such organisations and some previous leaders are on record as having funded such faith groups. If there was nothing wrong with working with such groups then, why now?

Do you support a caliphate, here or elsewhere?
I believe in a social-democratic society. I believe in a society where, through a democratic process, representatives are chosen and elected.

Do you believe sharia law should be incorporated into British law?
I am a lawyer and I was invited to the London Muslim Centre [in July 2008] when the then chief justice, Lord Phillips, came to speak and said that there are merits in learning from certain aspects of sharia law, to help our legal system. Not the penal elements; the family and civil elements. If the chief justice can make those comments, who am I to disagree?

Should the gay population of Tower Hamlets be worried by your victory?
During my opening speech as mayor, in front of the full council, I made it quite clear that I want to serve each and every member of my community, including the gay and lesbian community. It is not for me to make value judgements. I want to work with every member of the community, whatever their sexual orientation. I grew up with people in the East End from all backgrounds, black, white, gay, and many of them are still my mates.

Did Tower Hamlets town hall, on your watch, allow CDs of a Muslim preacher who has allegedly justified wife-beating to be handed out to visitors?
That did happen but it has been stopped and the chief executive has clear instructions from me not to let that happen again. It did not happen with his approval or my approval. And I assure you nothing of that sort will happen with my approval. But you can't control things that happen without your knowledge.

Can you explain what links, if any, you have to Saudi Arabia and your trips to that country? How were they funded?
It is an obligation, as a Muslim, to do the pilgrimage to Saudi Arabia. I haven't done the Hajj but I have had the good fortune of going on Umra [the lesser pilgrimage]. I have been on Umra four or five times. I went to Saudi Arabia on Umra during my council leadership at my own expense, on a private trip. As a Muslim you are not allowed to take money from anyone else, if you have the means, to go and pay your respects to Allah and go to the Kaaba [in Mecca].

Would you say you are a secularist? A secular politician?
My whole political upbringing has been about clear diving line between my faith and my politics. I believe in a civic, social democratic society.

Do you believe in a secular Britain?
I do. I live in a society based on a clear division of powers between the church and the state. Yes, I absolutely believe in a secular society.

Is there a plan?
I always have a plan. I had a manifesto, didn't I?

Are we doomed?
I am an optimist. I always look for the good nature in people.

Mehdi Hasan is a contributing writer for the New Statesman and the co-author of Ed: The Milibands and the Making of a Labour Leader. He was the New Statesman's senior editor (politics) from 2009-12.

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Why don’t we learn from our mistakes – even when it matters most?

Juan Rivera served ten years of prison time until DNA evidence overturned his sentence. But even now, some maintain his guilt.

On the afternoon of 17 August 1992, an 11-year-old girl called Holly Staker walked from her home to a neighbour’s apartment in Waukegan, a small town in Illinois. She had been asked to babysit two children, a girl aged two and a boy of five. By 8pm Holly was dead. An unidentified intruder had broken into the apartment, violently raped her, and stabbed her 27 times. The local police force pursued 600 leads and interviewed 200 people, but within a few weeks the trail had run cold.

Then, through the testimony of a jailhouse informant, police happened upon a new suspect: Juan Rivera, a 19-year-old man who lived a few miles south of the murder scene. Over four days, Rivera, who had a history of psychological problems, was subjected to a gruelling examination by the Lake County Task Force. At one point it seemed to get too much for Rivera. Officers saw him pulling out a clump of hair and banging his head on the wall.

On the third day, as the interviewers’ tone became aggressive, Rivera finally nodded his head when asked if he had committed the crime. By this time, his hands and feet were tied together, and he was confined to a padded cell. On the basis of his confession, police prepared a statement for Rivera to sign.

There were no witnesses to the crime. There was no physical evidence. But there was a brutally murdered young girl, a community still in mourning, and that signed confession. The jury didn’t take long to make up their minds. Rivera was convicted of first-degree murder and sentenced to life in prison.

Many journalists who covered the case were uneasy. They could see that the case hinged on the confession of a disturbed young man, who had retracted hours after signing it. But the police and prosecutors felt vindicated. It had been a troubling crime. A man had been sentenced. Holly’s family could find closure.

Or could they?


Eight years earlier, in 1984, Alec Jeffreys, a British scientist, had the insight that would lead to DNA fingerprinting – a technique that would transform the criminal justice system. In the absence of contamination, and provided the test is administered correctly, the odds of two unrelated people having matching DNA is roughly one in a billion. In certain cases, such as rape, it would in time be possible to identify the attacker conclusively, based on DNA extracted from the crime scene. After all, if the police swabbed the sperm found in the victim, they could narrow the number of potential suspects to just one. This is why DNA fingerprinting has helped to secure thousands of convictions – it has a unique power in establishing guilt.

But it also has implications for cases that have already been tried: the power to exonerate. If the DNA from the sperm in a rape victim has been stored, and if it does not match that of the person serving time in prison, the conclusion is difficult to deny: it came from a different man, the real criminal.

In August 1989, just months after DNA fingerprinting technology became advanced enough for use in the criminal justice system, Gary Dotson, who had been convicted of a 1977 rape in Chicago, was released from jail, having consistently proclaimed his innocence. Underwear worn by the victim had been sent for DNA testing, which showed that the semen belonged to a different man. Dotson had served more than ten years in jail.

The first DNA exoneration in the UK involved Michael Shirley, a young sailor who had been convicted of the rape and murder of Linda Cook, a barmaid working in Portsmouth, in December 1986. A simple DNA test performed in 2001, after police finally admitted they had stored swabs from the crime, proved that the semen found in the victim did not belong to Shirley. He had served 16 years at the time of his release.

By 2005, in the United States alone, the convictions of more than 300 people had been overturned following DNA tests. It seemed that the criminal justice system was getting it wrong repeatedly. In situations where evidence had been kept, clients of the Innocence Project, an American charity that helps prisoners who say they were wrongfully convicted, were exonerated in almost half the cases. A study led by Samuel R Gross, a professor at the University of Michigan Law School, concluded: “If we reviewed prison sentences with the same level of care that we devote to death sentences, there would have been over 28,500 non-death-row exonerations [in the US] in the past 15 years rather than the 255 that have in fact occurred.”

At that point, Juan Rivera, the man convicted of killing Holly Staker, had been in jail for almost 13 years. His lawyers decided to apply for a DNA test. It hadn’t been performed at the trial because techniques were not, at that time, sufficiently advanced to analyse very small samples of tissue. When the results came back they were conclusive: the semen found inside Holly Staker did not belong to Rivera.

He was yet another victim of wrongful conviction.


When a system produces an error, it is a tragedy for the person on the wrong side of the mistake. But it is also a precious learning opportunity, a chance to figure out what went wrong, and make reforms to the system to ensure that the same mistakes don’t happen again.

Aviation is a powerful model in this respect. Every plane is equipped with two black boxes, which record vital information. If an accident occurs, these boxes are recovered, the failure analysed, and reforms implemented. Pilots report near-miss events, too, which are statistically analysed in order to help prevent accidents.

In 1912, eight of the 14 qualified US army pilots died in crashes. In 2014, the accident rate for major airlines had dropped to just one crash for every 8.3 million take-offs. That’s the power of learning from mistakes.

Broadly speaking, this is how science works. Scientists make testable predictions; when these fail, the theories are reformed. As the philosopher Karl Popper put it: “The history of science . . . is a history . . . of error. But science is one of the very few human activities – perhaps the only one – in which errors are systematically criticised and fairly often, in time, corrected. This is why . . . we can speak clearly and sensibly about making progress there.”

But there is a practical problem with adopting this model of progress. Many people don’t like to admit to their mistakes. They do not meet their failures with intellectual honesty and a willingness to understand what went wrong, but with back covering and defensiveness. This has a simple consequence: if mistakes are not learned from, they will be made again and again. And again.

In his famous studies of “cognitive dissonance” in the 1950s, the sociologist Leon Festinger discovered the array of tactics used by people to spin, reframe and cover up their mistakes. A classic example involved a small group of cult members. They had left their families to live with a housewife called “Marian Keech” (real name: Dorothy Martin), who had predicted the world would end before dawn on 21 December 1954. She had also prophesied that the members of the cult would be saved from the looming apocalypse by a spaceship that would land at Keech’s small house in suburban Minnesota at midnight.

Neither the apocalypse nor the spaceship materialised (Keech’s husband, who was a non-believer, had gone to his bedroom and slept through the whole thing). This was an unambiguous failure. Keech had said the world would end, and that a spaceship would save true believers. Neither had happened. The cult members could have responded by altering their beliefs about Keech’s supernatural insights.

Instead, they altered the “evidence”. At first, the cult members kept checking outside to see if the spaceship had landed. Then, as the clock ticked past midnight, they became sullen and bemused. Ultimately, however, they became defiant. Just as Festinger had predicted before he infiltrated the cult, the faith of hardcore members was unaffected by what should have been a crushing disappointment. In fact, their faith seemed to grow stronger.

How is this possible? As Festinger recounted in his book When Prophecy Fails, first published in 1956, they simply redefined the failure. “The godlike figure is so impressed with our faith that he has decided to give the planet a second chance,” they proclaimed (I am paraphrasing only a little). “We saved the world!” Far from abandoning the cult, members went out on a recruitment drive. As Festinger put it: “The little group, sitting all night long, had spread so much light that God had saved the world from destruction.” They were “jubilant”.

This may sound bizarre, but it is, in fact, commonplace. Festinger showed that this behaviour, though seemingly extreme, provides an insight into psychological mechanisms that are universal. When we are confronted with evidence that challenges our deeply held beliefs we are more likely to reframe the evidence than we are to alter our beliefs. We simply invent new reasons, new justifications, new explanations. Sometimes we ignore the evidence altogether.

Think, for example, of health care. In her book After Harm, published in 2005, the American researcher Nancy Berlinger investigated how doctors reframe their mistakes. “Observing more senior physicians, students learn that their mentors and supervisors believe in, practise and reward the concealment of errors,” she wrote. “They learn how to talk about unanticipated outcomes until a ‘mistake’ morphs into a ‘complication’. Above all, they learn not to tell the patient anything.”

This is partly about fear of litigation, but also about the protecting ego. Think of the language associated with senior physicians. Surgeons work in a “theatre”. This is the stage where they “perform”. How dare they fluff their lines? As the safety expert James Reason put it: “After a long education, you are expected to get it right. The consequence is that medical errors are marginalised and stigmatised.”

But if doctors do not learn from their mistakes, they are destined to repeat them. A report by the UK National Audit Office in 2005 estimated that up to 34,000 people are killed each year as a result of human error in the health-care system. It put the overall number of patient incidents (fatal and non-fatal) at 974,000. In the US, annually, 400,000 people die because of preventable error in hospitals alone. That is the equivalent of two jumbo jets crashing every day.

Another example is economics. In 2010, a group of influential thinkers, including Michael J Boskin, a former chairman of the US president’s Council of Economic Advisers, and the historian Niall Ferguson, wrote an open letter to the chairman of the Federal Reserve. The signatories were worried that a second tranche of quantitative easing would “risk currency debasement and inflation” and “distort financial markets”. The letter was published in the Wall Street Journal and New York Times.

At the time, inflation was running at 1.5 per cent, but what happened in the aftermath? Did inflation soar? In fact, by December 2014, inflation had not merely stayed at historically low levels, but had fallen to 0.8 per cent (soon after that, it fell into negative territory). The US economy was creating jobs at a fast rate, too, while unemployment had dropped and companies were reporting record profits.

This was a stark error in prediction, an opportunity to revise theoretical assumptions (just as mistakes in medicine provide an opportunity to revise procedures). But the signatories saw it differently. David Malpass, a deputy assistant secretary to the Treasury under Ronald Reagan, said “the letter was correct as stated”. John Taylor, an economics professor, said: “The letter mentioned many things – the risk of inflation . . . to employment . . . – and all have happened.”

Again, like revered clinicians, these prestigious thinkers could not bear that they had got things wrong. So, instead of learning from their mistake, they spun it. Some of the signatories came up with detailed graphs and tables to show that they were right all along.

Consider that if inflation had soared, they would have claimed this as a vindication for their prediction (as the cult members would have said the apocalypse had materialised). Yet these eminent thinkers also claimed vindication when inflation fell (just like the cult members when the spaceship didn’t turn up). Heads I win; tails I don’t lose.

And this is why it is the social pundits with the most prestigious reputations – as measured by how often they tour the television studios – who often make the worst predictions. They have the most to lose from mistakes and are therefore the most likely to come up with ex post explanations for why they were right all along. And because these pundits are clever, their rationalisations sound plausible.

But it is also why they don’t learn from their mistakes. After all, if you can’t admit when you are wrong, how can you ever put things right?


This brings us back to the criminal justice system. Many of these DNA cases show unequivocal failures. They demonstrate almost beyond doubt that mistakes were made by the police, prosecution and courts. This should have led to an acknowledgement of error, and meaningful reform. In fact, the astonishing thing is not that the system – or at least the people behind it – learned, but the extent to which it continued to evade and deny.

When the DNA results came back for Juan Rivera, state prosecutors offered a new story to account for the evidence – a very different story from the one that they had presented at the original trial. Holly, an 11-year-old child, had had consensual sex with a lover a few hours before the attack, prosecutors claimed. This accounted for the semen. And Rivera? He had happened upon Holly after intercourse had taken place, and murdered her.

“It was a grotesque way of squaring the new evidence with their unshakeable belief that Rivera was guilty,” Steven Art, one of the jailed man’s lawyers, told me. “But it was also totally inconsistent with the overwhelming evidence that Holly had been raped, quite brutally. There were signs of vaginal and anal trauma and stab wounds in her genitals.”

The prosecutor’s new story may have seemed outlandish, but the consequences were very real. Rivera was not released from prison for another six years. “I got stabbed twice and endured three attempted rapes,” he told me during a phone interview last year. “People wanted to hurt me; they thought that I was a child rapist. But perhaps the toughest thing of all was knowing that I was innocent.”

Rivera’s experience was far from unusual. The vast majority of exonerations through DNA evidence were met with breathtaking obstruction. Nothing seemed to budge prosecutors from their conviction that the man who had been sent to prison was guilty. Even after the test had been performed. Even after the conviction had been overturned. Even after the prisoner had been released from jail.

The problem was not the strength of the evidence, which was often overwhelming; it was the psychological difficulty in accepting it.

The process often took a distinctive path. First the prosecutors would try to deny access to DNA evidence. When that strategy was batted away, and the test excluded the convict as the source of the DNA, they would claim that it had not been carried out correctly. This didn’t last long, either, because when the test was redone it would invariably come back with the same result. The next stage in rape cases was for the prosecutor to argue that the semen belonged to a different man who was not the murderer. In other words, the victim had consensual sex with another man, but was subsequently raped by the prisoner, who used a condom.

The presence of an entirely new man, not mentioned at the initial trial, for whom there were no eyewitnesses, and who the victim often couldn’t remember having sex with, may seem like a desperate ploy to evade the evidence. But it has been used so often that it has been given a name by defence lawyers: “the unindicted co-ejaculator”.

In an adversarial system you would expect any new evidence secured by the defence to be looked at with healthy scepticism by prosecutors. You would expect them to give it scrutiny and to look at the wider context to be sure it stacks up. But in case after case, the sense of denial from prosecutors and police went a lot further.

And this explains, in turn, why the system was making so many mistakes. Proper investigation into wrongful convictions by the Innocence Project in recent years has discovered profound weaknesses in forensic science, police detection methods, eyewitness testimony and more. If these investigations had taken place earlier, and reforms been introduced, untold suffering could have been averted. But these opportunities were missed repeatedly, on both sides of the Atlantic.

This is why legal campaigners argue that the most robust way to improve the system, so as to reduce wrongful convictions and simultaneously increase rightful convictions, is to establish innocence commissions. These are independent bodies, mandated to investigate wrongful convictions and to recommend reforms, along the lines of air accident investigation teams. As of publication, only 11 states in the US had such commissions.

In the UK, a reform commission of sorts was set up in 1995 after a series of spectacular miscarriages of justice, including the Birmingham Six and the Guildford Four. The Criminal Cases Review Commission, an independent body, has the authority to refer questionable verdicts to the Court of Appeal. Between 1997 and the end of October 2013 it referred 538 cases in total.

Of these, 70 per cent succeeded at appeal.


More than 20 years after Juan Rivera was sentenced, a DNA test was conducted on a bloodstained piece of timber that had been used in a different murder. In January 2000, a man called Delwin Foxworth, who also lived in Lake County, was beaten savagely with a plank, doused with gasoline and set on fire. He died of his injuries, having suffered burns over 80 per cent of his body.

The DNA of the blood found on the wood matched that of the semen found in Holly Staker. Police are now almost certain that the man who got away with the rape and murder of an 11-year-old girl in 1992 went on to commit another murder eight years later. Foxworth may be yet another victim of the wrongful conviction of Juan Rivera; it allowed the real culprit to get away with it, and kill again. (The murderer has never been found.)

But what about those who were responsible for sending Rivera to jail? How do they feel about it today? Perhaps it should come as no surprise that even now many remain convinced of his guilt. In October 2014, Charles Fagan, an investigator who helped obtain Rivera’s confessions, was asked if he still believed that he committed the murder. “I think so,” he told a local newspaper.

And what of the prosecutors? Even after Rivera was released, Lake County lawyers wanted to put him back on trial. Only with a further conviction would they be able to say that they had been right all along. Only with a conviction could they quell their dissonance. Rivera walking around free was like an accusation against their competence.

It was left to the Illinois Appellate Court to take what might otherwise seem to be an astonishing step: it barred Lake County from ever prosecuting Juan Rivera for the murder of Holly Staker again.

Matthew Syed’s latest book is “Black Box Thinking: the Surprising Truth About Success” (John Murray)

This article first appeared in the 12 November 2015 issue of the New Statesman, Isis and the threat to Britain