Police officers guard a cordon set up around a crime scene where one man was killed was killed in Woolwich, southeast London May 22, 2013. British Prime Minister David Cameron has called a meeting of ... more 

Police officers guard a cordon set up around a crime scene where one man was killed was killed in Woolwich, southeast London May 22, 2013. British Prime Minister David Cameron has called a meeting of his government's emergency Cobra security committee after the killing of a man in south London, his office said on Wednesday. REUTERS/Stefan Wermuth (BRITAIN - Tags: CRIME LAW POLITICS) less