The murder of soldier Lee Rigby has provoked a backlash of anger across the UK, including the attacking of mosques, racial abuse and comments made on social media. Eleven people have been arrested around Britain for making 'racist or anti-religious' comments on Twitter following the brutal killing in Woolwich on Wednesday. The incident has also prompted a huge increase in anti-Muslim incidents, according to the organisation Faith Matters, which works to reduce extremism. Before the attack about four to eight cases a day were reported to its helpline. But the group said about 150 incidents had been reported in the...