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. Hundreds of Pakistanis angry at an anti-Islam film that denigrates the religion's prophet clashed with police in the Pakistani capital Thursday, the most violent show of anger in a day that saw smaller demonstrations in Indonesia, Iran and Afghanistan. (AP Photo/Anjum Naveed)