© Joel Goodman - 07973 332324 . 11/09/2011 . London , UK . Police intervene as angry protesters from MAC and counter protesters from the English Defence League confront one another . Islamist organisation Muslims Against Crusades march to the London Central Mosque after holding a demonstration outside the American Embassy in London on the tenth anniversary of Al-Qaeda's terrorist attack on the World Trade Centre in New York . Photo credit : Joel Goodman