Weekend violence claims more than 45 lives in Egypt

With his trousers around his knees to show defiance, a protester throws stones towards riot policemen and other demonstrators who have taken the side of security forces during clashes near Cairo's Tahrir Square on Jan. 27, 2013.

Protesters try to convince an elderly woman to move out of the way after she sat down in between opposing sides during a demonstration in Tahrir Square, Cairo on Jan. 27, 2013.

A mass funeral in Port Said on Jan. 27, 2013. Tens of thousands of mourners poured into the streets of the restive Egyptian city of Port Said on Sunday for a funeral for most of the 37 people killed in rioting a day earlier, chanting slogans against Islamist President Mohammed Morsi.

A protester stands by a fire lit during clashes with riot police near Tahrir Square in Cairo on Jan. 27, 2013.

A protester opposing Egyptian President Mohamed Morsi throws a tear gas canister, which was earlier thrown by riot police, during clashes along Qasr Al Nil bridge, which leads to Tahrir Square in Cairo, Egypt, Jan. 27. Egyptian President Mohamed Morsi announced on Sunday he was imposing a state of emergency for 30 days in three cities along the Suez Canal that have been the scene of the worst violence that flared over the weekend, killing more than 45 people.