Pak anti-Islam film protest

A Pakistani protester carries a burning piece of canvas towards containers police had placed to block the road leads to the diplomatic enclave in Islamabad, Pakistan on Thursday, Sept. 20, 2012. (AP Photo)

Pakistani protesters trying to push away a tear gas canister police fired to disperse them during a protest in Islamabad, Pakistan on Thursday, Sept. 20, 2012. (AP Photo)

Pakistani protesters rally in Islamabad, Pakistan on Thursday, Sept. 20, 2012. Hundreds of Pakistanis angry at an anti Islam film that denigrates the religion's prophet clashed with police in the Pakistani capital Thursday. (AP Photo)

Pakistani protesters rally near containers police had placed to block the road leads to the diplomatic enclave in Islamabad, Pakistan on Thursday, Sept. 20, 2012. (AP Photo)

A Pakistani protester reaches for a tear gas canister fired by police, during clashes erupted as protestors tried to approach the U.S. embassy, in Islamabad, Pakistan, Thursday, Sept. 20, 2012. (AP Photo)

Pakistani protesters run away to avoid tear gas fired by police, not pictured, during clashes erupted as protestors tied to approach the U.S. embassy, in Islamabad, Pakistan, Thursday, Sept. 20, 2012. (AP Photo)

A Pakistani protester hurls a stone at police, not pictured, during clashes that erupted as protestors tried to approach the U.S. embassy, in Islamabad, Pakistan, Thursday, Sept. 20, 2012. (AP Photo)

A Pakistani protester throws a wooden stick at a police post set on fire by other protestors, during clashes that erupted as protestors tried to approach the U.S. embassy, in Islamabad, Pakistan, Thursday, Sept. 20, 2012. (AP Photo)

A Pakistani protester hurls back a tear gas canister fired by police, not pictured, during clashes that erupted as protestors tried to approach the U.S. embassy, in Islamabad, Pakistan, Thursday, Sept. 20, 2012. (AP Photo)

A Pakistani protester throws away a tear gas canister fired by police, not pictured, during clashes that erupted as protestors tried to approach the U.S. embassy, in Islamabad, Pakistan, Thursday, Sept. 20, 2012. (AP Photo)

A Pakistani protester reacts to tear gas fired by police, during clashes erupted as protestors tried to approach the U.S. embassy, in Islamabad, Pakistan, Thursday, Sept. 20, 2012. (AP Photo)

Supporters of Pakistani religious party Minhajul Quran attend a rally as a part of widespread anger across the Muslim world about a film ridiculing Islam's Prophet Muhammad, on Thursday, Sept. 20, 2012 in Lahore, Pakistan. (AP Photo)

Supporters of Pakistani religious party Minhajul Quran holding placards with Muhammad's name on them at a rally, as they protest about a film ridiculing Islam's Prophet Muhammad, on Thursday, Sept. 20, 2012 in Lahore, Pakistan. (AP Photo)

Pakistani protesters rally in Quetta, Pakistan as a part of widespread anger across the Muslim world about a film ridiculing Islam's Prophet Muhammad, on Thursday, Sept. 20, 2012. (AP Photo)

Pakistani protesters hold a banner depicting U.S. President Barack Obama and pastor Terry Jones during a rally in Peshawar, Pakistan as a part of widespread anger across the Muslim world about a film ridiculing Islam's Prophet Muhammad, on Thursday, Sept. 20, 2012. (AP Photo)

Pakistani protesters burn a representation of a U.S. flag and an effigy of President Barack Obama during a rally in Peshawar, Pakistan as a part of widespread anger across the Muslim world about a film ridiculing Islam's Prophet Muhammad, on Thursday, Sept. 20, 2012. (AP Photo)

Pakistani protesters stand on a representation of a U.S. flag bearing the picture of American pastor Terry Jones, during a protest in Pakistani border town of Chaman along the Afghanistan border on Thursday, Sept. 20, 2012. (AP Photo)

Pakistani protesters burn a representation of a U.S. flag and an effigy of U.S. President Barack Obama in the Pakistani border town of Chaman along the Afghanistan border on Thursday, Sept. 20, 2012. (AP Photo)

Pakistani protesters shout anti U.S. slogans at a rally in Rawalpindi, Pakistan on Friday, Sept. 21, 2012. Pakistan has blocked cell phone service in major cities to prevent militants from using phones to detonate bombs during a national day of protest against an anti Islam film produced in the United States. (AP Photo)

Pakistani protesters burn tires to block the main highway in Rawalpindi, Pakistan on Friday, Sept. 21, 2012. Pakistan has blocked cell phone service in major cities to prevent militants from using phones to detonate bombs during a national day of protest against an anti Islam film produced in the United States. (AP Photo)