Egyptian protesters offer their evening prayers in front of the U.S embassy. – Photo by AP

An Egyptian protester carries a banner that says "men who defeated the Americans,” in Arabic. – Photo by AP

A demonstrator holds banner during a rally to condemn the killers of the U.S. Ambassador to Libya and the attack on the U.S. consulate in Benghazi. – Photo by Reuters

A Libyan demonstrator holds a message that reads “sorry people of America, this is not the behavior of our Islam and Prophet.”

Demonstrators hold a placard during a rally to condemn the killers and voice support for the U.S. Ambassador Christopher Stevens and three embassy staff who were killed. – Photo by Reuters

Egyptian protesters wearing Guy Fawkes masks pose in front of some graffiti. – Photo by AP

People stand around a drawing that says "Remember your black day 11 September" during the protest in Cairo. – Photo by Reuters

A protester has his eyes doused with milk after tear gas was fired during clashes with riot police. – Photo by Reuters

People shout slogans and light flares in front of the U.S. embassy. – Photo by Reuters

A protester starts a fire during clashes with riot policemen along a road that leads to the U.S embassy near Tahrir Square. – Photo by Reuters

Tunisian protesters hold Islamic flags and a Quran during the demonstration. – Photo by AFP

An Egyptian protester stands above the entry of the US embassy in Cairo during a demonstration against a film deemed offensive to Islam. – Photo by AFP

Libyan people gather in protest. – Photo by Reuters