George Zimmerman acquitted by jury over the killing of Trayvon Martin

Controversial case closes controversially.

George Zimmerman has been acquitted of the murder of 17-year-old Florida student Trayvon Martin.

Martin was walking back to his father's fiancée's house in a gated community outside Sanford, FL, carrying skittles and iced tea which he had bought at a local shop. Zimmerman said he spotted Martin, who was wearing a hoody, on his way to the store, and called the police to report a "suspicious male". He followed Martin, the two ended up in a fight, and Zimmerman shot the teenager.

The case took six weeks to even result in a charge being brought, due to Florida's "Stand Your Ground" laws, which greatly expand the scope under which self-defence can be used as a defence. Floridians may use lethal force if they fear for their own life, for the life of someone else, or to prevent a federal crime being committed. Crucially, there is no obligation to "retreat"; as a result, the laws are colloquially known as "shoot first" laws. Even before the law was passed, Miami's police chief warned of its possible outcome:

Whether it's trick-or-treaters or kids playing in the yard of someone who doesn't want them there or some drunk guy stumbling into the wrong house… you're encouraging people to possibly use deadly physical force where it shouldn't be used.

Florida's implementation of Stand Your Ground actually protects the accused from even answering allegations in court, which is why it took so long for charges to be brought in the Martin case. But when the charges were brought, some thing they were the wrong ones. Jonathan Turley, a law professor at GWU, writes:

Many of us from the first day of the indictment criticized State Attorney Angela Corey for overcharging the case as second-degree murder… This was clearly a challenging case even for manslaughter and the decision to push second-degree murder (while satisfying to many in the public) was legally and tactically unwise. The facts simply did not support a claim beyond a reasonable doubt that George Zimmerman acted with intent and a “depraved mind, hatred, malice, evil intent or ill will.” Had Corey charged manslaughter, the case might have been closer but would have still been a challenge.

The legal case is, apparently, closed. But the political one remains open; the laws which allowed and encouraged this death need not be in place forever, and hopefully this will provide the impetus to change for the better.

George Zimmerman stands as the jury arrives to deliver his verdict. Photograph: Getty Images

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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Air pollution: 5 steps to vanquishing an invisible killer

A new report looks at the economics of air pollution. 

110, 150, 520... These chilling statistics are the number of deaths attributable to particulate air pollution for the cities of Southampton, Nottingham and Birmingham in 2010 respectively. Or how about 40,000 - that is the total number of UK deaths per year that are attributable the combined effects of particulate matter (PM2.5) and Nitrogen Oxides (NOx).

This situation sucks, to say the very least. But while there are no dramatic images to stir up action, these deaths are preventable and we know their cause. Road traffic is the worst culprit. Traffic is responsible for 80 per cent of NOx on high pollution roads, with diesel engines contributing the bulk of the problem.

Now a new report by ResPublica has compiled a list of ways that city councils around the UK can help. The report argues that: “The onus is on cities to create plans that can meet the health and economic challenge within a short time-frame, and identify what they need from national government to do so.”

This is a diplomatic way of saying that current government action on the subject does not go far enough – and that cities must help prod them into gear. That includes poking holes in the government’s proposed plans for new “Clean Air Zones”.

Here are just five of the ways the report suggests letting the light in and the pollution out:

1. Clean up the draft Clean Air Zones framework

Last October, the government set out its draft plans for new Clean Air Zones in the UK’s five most polluted cities, Birmingham, Derby, Leeds, Nottingham and Southampton (excluding London - where other plans are afoot). These zones will charge “polluting” vehicles to enter and can be implemented with varying levels of intensity, with three options that include cars and one that does not.

But the report argues that there is still too much potential for polluters to play dirty with the rules. Car-charging zones must be mandatory for all cities that breach the current EU standards, the report argues (not just the suggested five). Otherwise national operators who own fleets of vehicles could simply relocate outdated buses or taxis to places where they don’t have to pay.  

Different vehicles should fall under the same rules, the report added. Otherwise, taking your car rather than the bus could suddenly seem like the cost-saving option.

2. Vouchers to vouch-safe the project’s success

The government is exploring a scrappage scheme for diesel cars, to help get the worst and oldest polluting vehicles off the road. But as the report points out, blanket scrappage could simply put a whole load of new fossil-fuel cars on the road.

Instead, ResPublica suggests using the revenue from the Clean Air Zone charges, plus hiked vehicle registration fees, to create “Pollution Reduction Vouchers”.

Low-income households with older cars, that would be liable to charging, could then use the vouchers to help secure alternative transport, buy a new and compliant car, or retrofit their existing vehicle with new technology.

3. Extend Vehicle Excise Duty

Vehicle Excise Duty is currently only tiered by how much CO2 pollution a car creates for the first year. After that it becomes a flat rate for all cars under £40,000. The report suggests changing this so that the most polluting vehicles for CO2, NOx and PM2.5 continue to pay higher rates throughout their life span.

For ClientEarth CEO James Thornton, changes to vehicle excise duty are key to moving people onto cleaner modes of transport: “We need a network of clean air zones to keep the most polluting diesel vehicles from the most polluted parts of our towns and cities and incentives such as a targeted scrappage scheme and changes to vehicle excise duty to move people onto cleaner modes of transport.”

4. Repurposed car parks

You would think city bosses would want less cars in the centre of town. But while less cars is good news for oxygen-breathers, it is bad news for city budgets reliant on parking charges. But using car parks to tap into new revenue from property development and joint ventures could help cities reverse this thinking.

5. Prioritise public awareness

Charge zones can be understandably unpopular. In 2008, a referendum in Manchester defeated the idea of congestion charging. So a big effort is needed to raise public awareness of the health crisis our roads have caused. Metro mayors should outline pollution plans in their manifestos, the report suggests. And cities can take advantage of their existing assets. For example in London there are plans to use electronics in the Underground to update travellers on the air pollution levels.

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Change is already in the air. Southampton has used money from the Local Sustainable Travel Fund to run a successful messaging campaign. And in 2011 Nottingham City Council became the first city to implement a Workplace Parking levy – a scheme which has raised £35.3m to help extend its tram system, upgrade the station and purchase electric buses.

But many more “air necessities” are needed before we can forget about pollution’s worry and its strife.  

 

India Bourke is an environment writer and editorial assistant at the New Statesman.