A protestor reacts from tear gas fired by riot police, unseen, near the U.S. Embassy during a protest about a film ridiculing Islam's Prophet Muhammad, in Sanaa, Yemen, Thursday, Sept. 13, 2012. (AP Photo/Hani Mohammed)

Photo by: Hani Mohammed

A protestor reacts from tear gas fired by riot police, unseen, near the U.S. Embassy during a protest about a film ridiculing Islam's Prophet Muhammad, in Sanaa, Yemen, Thursday, Sept. 13, 2012. (AP Photo/Hani Mohammed)