When crowdsourcing goes wrong: Reddit, Boston and missing student Sunil Tripathi

Reddit's initial hunt to find the Boston bombers devolved rapidly into a sort of "racist Where's Wally", profiling – racially and otherwise – scores of innocent people.

Update, 20 April: The two suspects for the bombing have been identified as Tamerlan and Dzhokhar Tsarnaev. The former was killed in a gunfight with police in the early hours of 19 April, while the latter was arrested and is now in custody. Sunil Tripathi was found dead on 24 April.









On 16 March, Sunil Tripathi, a student at Brown University in Providence, Rhode Island, went missing, leaving behind a cryptic note. His whereabouts are still unknown, but for a brief moment, it looked like he was involved in far bigger things. His name turned up on the Boston Police Department's scanner early this morning, suddenly and without warning. We now know that BPD was mistaken: according to NBC and the Associated Press, the suspects are migrants from an area of Russia near Chechnya. But that didn't stop a lot of people getting very excited.

The BPD was chasing two men who had held up a 7/11, shot and killed a police officer, and then headed west, apparently hurling explosives out of the window of the stolen SUV they were driving. As the chase continued, it seemed more and more likely that the men must be related to the Boston Marathon bombing, and at 7:20am BST the Boston Globe confirmed it: one suspect had been taken into custody. That man, they now report, is dead. The second remains at large.

But it's not quite true to say that Sunil Tripathi's name first came up in this startlingly new context on the BPD scanner. Because Reddit "called it" first.

Late last night, Redditor pizzatime linked to reports of Tripathi's disappearance, asking "Is missing student Sunil Tripathi Marathon Bomber #2?". At that time, the FBI had just released photos of two suspects, neither of whom had appeared on any of Reddit's crowdsourced hunts for the bomber. But pizzatime noticed that one of them bore a resemblance to Tripathi, and posted accordingly.




Reddit had set themselves the task of finding a needle in a haystack, but failed to take account of the fact that they had no way to tell for certain whether they'd found a needle or a needle-like piece of hay. The initial hunt to find the bombers devolved rapidly into a sort of "racist Where's Wally", profiling – racially and otherwise – scores of innocent people.

It's hard to be certain of the provenance, but that crowdsourcing (along with 4Chan's who did much the same thing) certainly led to images stripped of their context being passed around as though they were confirmed, and probably had a hand in the New York Post smearing two innocent men on their front page. And now it looks like it smeared Tripathi, too.

But really, the crowdsourced hunt for the bomber should be split into two acts. The first, finding suspicious-looking people in photos of the marathon, was always going to end in innocents' reputations being destroyed. With no method of confirmation, few feet on the ground and a wealth of opportunity for false positives, Reddit was abysmally suited for the task, and it failed abjectly.

But once the photos of the suspects were released, it had more chance of being useful. "Do you know this man?" is the archetypal example crowdsourcing. Wanted posters have been used for over 130 years, and we've got a pretty good hang on how they work by now: you need to find someone, so you show their face to as many people as possible. Tripathi looked like the second bomber, and so his name was linked. But then Reddit took it further.

The crowdsourcing part of wanted posters is about making sure as many people as possible see the picture. It is emphatically not about making sure any allegations resulting from the picture are made public. That's not crowdsourcing, it's just speculating; there is little advantage in getting the crowd involved at that point, and the major downside that someone's life might be ruined based on who they look like.

Tripathi wasn't the bomber. He just looked like him. How his name ended up with the Boston Police Department remains unclear, but it is clear that he is not a suspect. Where he is remains an open question, but maybe one Reddit should steer clear of. The world hasn't changed that much.

The FBI's two suspect photos, now identified as the Tsarnaev brothers.

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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We can't rush to war in Syria without a plan for peace

A recent visit to Iraq has left me doubtful that the Prime Minister's plan can suceed, says Liam Byrne.

As shock of the Paris lifts and the fightback starts, all eyes are now the prime minister and, at last, the 'full spectrum response' we were promised months ago.

But what's needed now is not just another plan to bomb the ground -  but a plan to hold the ground we win. Four days in Northern Iraq has made me deeply sceptical about air strikes alone. It's convinced me that after the mistakes of Iraq and Libya, we cannot have yet another effort to win the battle and lose the war. Without politics and aid, projectiles and air-raids will fail. It's as simple as that.

After the horror of Paris it's easy to ignore that in Iraq and Syria, Isil is now in retreat. That's why these animals are lashing out with such barbarism abroad. In the ground war, Kurdistan's fighters in particular, known as the Peshmerga - or 'those who face death' -  have now shattered the myth of Isil's invincibility.

A fortnight ago, I travelled through Northern Iraq with a group of MP's arriving on the day the key town of Sinjar was stormed, cutting the umbilical cord - route 47 - between Isil's spiritual home of Mosul in Iraq and Isil HQ in Raqqa. And on the frontline in Kirkuk in north west Iraq, two miles from Isil territory, Commander Wasta Rasul briefed us on a similar success.

On the great earthwork defences here on the middle of a vast brown plain with the flares of the oil pumps on the horizon, you can see through binoculars, Isil's black flags. It was here, with RAF support, that Isil was driven out of the key oil-fields last summer. That's why air cover can work. And despite their best efforts - including a suicide attack with three Humvees loaded with explosives - Isil's fight back failed. Along a 1,000 km battle-front, Isil is now in retreat and their capitals aren't far from chaos.

But, here's the first challenge. The military advance is now at risk from economic collapse. Every political leader I met in Iraq was blunt: Kurdistan's economy is in crisis. Some 70% of workers are on the public payroll. Electricity is free. Fuel is subsidised. In other words, the Government's bills are big.

But taxes are non-existent. The banks don't work. Inward investment is ensnared in red tape. And when the oil price collapsed last year, the Government's budget fell through the floor.

Now, in a bust up with Baghdad, cash has been slashed to Kurdistan, just as a wave of 250,000 refugees arrived, along with over a million internally displaced people fleeing Da'esh and Shiite militias in the south. Nearly 6,000 development projects are stalled and people - including the Peshmerga - haven't been paid for months.

We have brave allies in the fight against Isil - but bravery doesn't buy them bullets. As we gear up the battle against Isil, it's now vital we help boost the Kurd's economic strength - or their sinews of war will weaken. There's an old Kurdish saying; 'the mountains are our only friends'. It's an expression born of years of let-down. In the fight against Da'esh, it's a mistake we can't afford to repeat today.

Second, everyone I met in Iraq was clear that unless the Sunni community can find alternative leadership to Isil then any ground we win may soon be lost, if not to Isil, then “Isil II”. Let's remember Isil didn't just 'emerge'. It grew from a tradition of political Islam decades old and mutated like a Frankenstein monster first by Al-Qaeda, then Al-Qaeda in Iraq, then the Al-Nusra front and now Isil.

Crucial to this warped perversion has been the total breakdown of trust between Iraq's Sunni residents - and the Shi'ite dominated government in Baghdad. In Mosul, for instance, when the Iraqi security forces left, they were stoned in their Humvees by local residents who felt completely humiliated. In refugee camps, it's not hard to find people who didn't flee Da'esh but Shi'ite militia groups.

Now, tracking surveys in Mosul report tension is rising. The Isil regime is sickening people with an obsessive micro-management of the way everyone lives and prays - down to how men must style their beards - with brutal punishment for anyone stepping out of line. Mobile phone coverage is cut. Food prices are rising. Electricity supplies are sporadic. Residents are getting restless. But, the challenge of gaining - and then holding a city of 3 million people will quite simply prove impossible without alternative Sunni leaders: but who are they? Where will they come from? The truth is peace will take politics.

There's one final piece of the puzzle, the PM needs to reflect on. And that's how we project a new unity of purpose. We desperately need to make the case that our cause is for both western and Islamic freedom.

I serve the biggest Muslim community in Britain - and amongst my constituents, especially young people, there's a profound sense that the conduct of this debate is making them feel like the enemy within. Yet my constituents hate Isil's violence as much as anyone else.

In Iraqi Kurdistan, I heard first-hand the extraordinary unity of purpose to destroy Isil with total clarity: “Your fight,” said the Kurdistan prime minister to us “is our fight.” In the refugee camps at Ashti and Bakhara, you can see why. Over a million people have been displaced in Kurdistan - grandparents, parents, children - fleeing to save their children - and losing everything on the way. “Da'esh,” said one very senior Kurdistan official 'aren't fighting to live. They're fighting to die. They're not battling a country or a system. They're battling humanity".

Here in Europe, we are hardwired to the fortunes of Central Asia, by trade, energy needs, investment and immigration. It's a vast region home to the seminal struggles of Israel/Palestine, Sunni/Shia and India/ Pakistan. Yet it's a land with which we share traditions of Abrahamic prophets, Greek philosophy and Arabic science. We need both victory and security. So surely we can't try once again to win a war without a plan for winning a peace. It's time for the prime minister to produce one.

Liam Byrne is Labour MP for Birmingham Hodge Hill, cofounder of the UK-China Young Leaders Roundtable and author of Turning to Face the East: How Britain Prospers in the Asian Century.