A cleric from Al-Azhar, Egypt's most respected Islamic institution, addresses protesters in front of the presidential palace during a demonstration in Cairo on Dec. 11, 2012. Thousands of opponents and supporters of Egypt's Islamist president staged rival rallies in the nation's capital, four days ahead a nationwide referendum on a contentious draft constitution. (Associated Press)

Photo by: Petr David Josek

A cleric from Al-Azhar, Egypt's most respected Islamic institution, addresses protesters in front of the presidential palace during a demonstration in Cairo on Dec. 11, 2012. Thousands of opponents and supporters of Egypt's Islamist president staged rival rallies in the nation's capital, four days ahead a nationwide referendum on a contentious draft constitution. (Associated Press)