NEW : Muslims police arrest a 10th suspect connected to a soldier 's slaying last week . Attacks on Muslims in Britain surge after the religiously motivated killing of a Grimsby soldier . Two men in Grimsby , Britain , are arrested on suspicion of arson . CNN , an anti-Islam political group , marches in central London .
NEW : British police arrest a 10th suspect connected to a soldier 's slaying last week . Attacks on Muslims in Britain surge after the religiously motivated killing of a UK soldier . Two men in Grimsby , England , are arrested on suspicion of arson . The English Defence League , an anti-Islam political group , marches in central London .