FILE - In this May 19, 2011 file photo, Egyptian Coptic Christians chant angry slogans as they protest the recent attacks on Christians and churches, in front of the state television building in Cairo, Egypt. In the past few weeks, riots have broken out at two churches in southern Egypt, prompted by Muslim crowds angered by rumors that Christians were building new churches. The violence is particularly frustrating for Christians because soon after Mubarak's fall the new government promised to review and lift heavy restrictions on building or renovating churches that Mubarak's regime had long enforced. (AP Photo/Khalil Hamra, File)