By Maria Golovnina and Guy Faulconbridge LONDON (Reuters) - A British soldier was hacked to death by two men shouting Islamic slogans in a south London street, in what Prime Minister David Cameron said appeared to be a terrorist attack. A dramatic clip filmed by an onlooker just minutes after the killing showed a man with hands covered in blood, brandishing a bloodied meat cleaver and a knife. "We swear by almighty Allah we will never stop fighting you. ...

Imagine Derek Jeter leading the New York Yankees off the field because opposing fans were yelling racial slurs and throwing bananas at his team. Or a game between the Miami Heat and Chicago Bulls halted because of unrelenting race-baiting from the crowd.