Egyptian protesters chant slogans as they attend a demonstration in Tahrir square in Cairo, Egypt, Friday, Dec. 14, 2012. Opposing sides in Egypt's political crisis were staging rival rallies on Friday, the final day before voting starts on a contentious draft constitution that has plunged the country into turmoil and deeply divided the nation.(AP Photo/Khalil Hamra) ORG XMIT: KH104