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Egyptian protesters opposing president Mohammed Morsi attend Friday prayers beneath with a poster depicting protesters killed in the Egyptian revolution, at Tahrir Square, Cairo, Egypt, Friday, Dec. 7, 2012. Arabic on the poster reads their names from right "Islam, Jaber, Khalid Said, Emad Effat and Mina Daniel." Thousands of Egyptians took to the streets after Friday midday prayers in rival rallies and marches across Cairo, as the standoff deepened over what opponents call the Islamist president's power grab, raising the specter of more violence. (AP Photo/Nasser Nasser)

Crisis in Egypt

Islamists backing a new constitution for Egypt claimed victory Dec. 16 in

the first leg of a referendum, but the opposition alleged polling

violations and called for nationwide protests ahead of next week's elections.