The haze of confusion surrounding the abrupt stroming of the U.S. Embassy in Cairo today is beginning to clear up. In a demonstration that began a peep but quickly morphed into a violent roar, crowds of ultra-conservative Muslim protesters have climbed the walls of the embassy building, tore down the American flag and replaced it with a black flag to protest a controversial film that insults the prophet Muhammad. Here's what we know about the protests and why they spun out of control.

It's not completely clear which film sparked the protest (an early CNN report cited a Dutch movie) but most reports attribute the outrage to a film produced by U.S. pastor Terry Jones, that guy who inflamed Muslims around the world in 2010 by threatening to burn a Koran. That film has been referred to under the title Muhammad's Trial or Muhammad, Prophet of the Muslims depending on the news source, and was allegedly produced by Jones and two Coptic Egyptians (a Christian minority group) living in the U.S. The film appears online dubbed in Arabic and The Atlantic's Max Fisher has pieced together some of its content:

It appears to compare Mohammed to a goat and Muslims, according to one translation, to "child-lovers." ... The man in the scene says of his goat, "This is the first Muslim animal." He asks the goat if it likes girls; when it doesn't answer, he bursts into laughter and says, "He doesn't like girls," according to Stack. Other scenes in the above clip seem to portray Muslim Egyptian characters, who for some reason all have strong New York accents, as immoral and violent, particularly toward the Christians whom they pursue with near-genocidal fervor. A number of Islam's founding figures, including the prophet, are accused of homosexuality and child molestation.

Backing up charges that Jones is involved, Reuters Tamim Elyan reports that today, "Egypt's
prestigious Al-Azhar mosque and seat of Sunni learning condemned on Tuesday a symbolic 'trial' of the Prophet organized by a U.S. group including Terry Jones." But obviously, it took more than a cheap online video to take off.