Supporters of a Insaf Student Federation burn an effigy of U.S. President Barack Obama and a representation of a U.S. flag demonstration in Karachi, Pakistan, on Saturday, Sept. 15, 2012, as part of widespread anger across the Muslim world about a film ridiculing Islam's Prophet Muhammad. (AP Photo/Fareed Khan)

Photo by: Fareed Khan

Supporters of a Insaf Student Federation burn an effigy of U.S. President Barack Obama and a representation of a U.S. flag demonstration in Karachi, Pakistan, on Saturday, Sept. 15, 2012, as part of widespread anger across the Muslim world about a film ridiculing Islam's Prophet Muhammad. (AP Photo/Fareed Khan)