Protesters chant slogans amid orange smoke outside the U.S. embassy in Cairo, Egypt, Tuesday, Sept. 11, 2012. Egyptian protesters, largely ultra conservative Islamists, have climbed the walls of the U.S. embassy in Cairo, went into the courtyard and brought down the flag, replacing it with a black flag with Islamic inscription, in protest of a film deemed offensive of Islam. (AP Photo/Mohammed Abu Zaid)