![A police officer cordons off shops set alight and burned during riots in Tottenham, north London, August 7, 2011. Rioters throwing petrol bombs battled police in a economically deprived district of London overnight, setting patrol cars, buildings and a double-decker bus on fire in some of the worst disorder seen in the capital for recent years. [Xinhua]](http://images.china.cn/attachement/jpg/site1007/20110808/00016c8b649f0fa9b51651.jpg "A police officer cordons off shops set alight and burned during riots in Tottenham, north London, August 7, 2011. Rioters throwing petrol bombs battled police in a economically deprived district of London overnight, setting patrol cars, buildings and a double-decker bus on fire in some of the worst disorder seen in the capital for recent years. [Xinhua]")
A police officer cordons off shops set alight and burned during riots in Tottenham, north London, August 7, 2011. Rioters throwing petrol bombs battled police in a economically deprived district of London overnight, setting patrol cars, buildings and a double-decker bus on fire in some of the worst disorder seen in the capital for recent years. [Xinhua]