An Egyptian protester throws a tear gas canister back at riot police, not seen, during clashes near Tahrir Square, Cairo, Egypt, Monday, Jan. 28, 2013. Health and security officials say a protester has been killed in clashes between rock-throwing demonstrators and police near Tahrir Square in central Cairo. The officials say the protester died Monday on the way to the hospital after being shot. (AP Photo/Khalil Hamra)