Clashes Outside Egypt's Main Coptic Cathedral

Egyptian riot police fire tear gas into the compound of the Coptic Orthodox Cathedral after the funeral of four Christians killed in sectarian clashes near Cairo, April 7, 2013.

Egyptian Christians carry the coffin of Morqos Kamal, at the Saint Mark Coptic cathedral in Cairo, Egypt, April 7, 2013.

Egyptian Christians carry four coffins during a funeral service, at the Saint Mark Coptic cathedral in Cairo, Egypt, April 7, 2013.

A man uses a bucket to put out a tear gas canister as Coptic Christians run inside the Saint Mark Coptic cathedral during clashes with Muslims, April 7, 2013.

Coptic Christians help a man who was injured by a bullet from a cartridge gun, inside the main cathedral in Cairo, during clashes with Muslims, April 7, 2013.