Britain's Prime Minister David Cameron (L) and the leader of the opposition Labour Party Ed Miliband leave after a service to mark the 20th anniversary of the murder of teenager Stephen Lawrence, at ... more 

Britain's Prime Minister David Cameron (L) and the leader of the opposition Labour Party Ed Miliband leave after a service to mark the 20th anniversary of the murder of teenager Stephen Lawrence, at St Martin-in-the-Fields church in London April 22, 2013. REUTERS/Luke MacGregor less