Thousands of Muslims crowded London mosques for Friday prayers, condemning the bombings, but also wary they could be made scapegoats and fearful of reprisals against their growing and vibrant community. At the East London Mosque, near the site of one of Thursday's attacks, an imam told the 8,000 worshippers to be "confident in our identity" as part of London's multicultural fabric. The mosque said it had received hate e-mails and a telephone threat to disrupt Friday prayers. A few police officers stood outside during the prayers, which ended peacefully. Outside, some Muslims said the attacks had made them more cautious...