• Supporters of ousted President Mohammed Morsi protest at the Republican Guard building in Nasr City, Cairo, Egypt, Tuesday, July 9, 2013.

    Egypt was rocked by its deadliest day since its Islamist president was toppled by the military, with more than 50 of his supporters killed by security forces as top Muslim cleric raised the specter of civil war.

    LAST UPDATE : Jul 09, 2013, 5:52 AM EDT