Via the Guardian:
Police have arrested 15 people after violence between far-right activists and local youths outside a mosque in east London.
Witnesses said the clash near the East London Mosque in Whitechapel erupted after supporters of the English Defence League chanted anti-Muslim slogans. Scotland Yard said one man was injured and taken to hospital with "non life-threatening injuries".
"The incident involved several hundred people," a police spokesman said. "Bottles and other items were thrown."(source)