The week's best photos

A masked protester carried a tire to add to burning tires used as a roadblock to protest the death of Brig. Gen. Wissam al-Hassan, head of the intelligence division of Lebanon's domestic security forces in a car bomb attack targeting his convoy, in the southern port city of Sidon, Lebanon, Saturday, Oct. 20, 2012. Protesters burned tires and set up roadblocks around Lebanon on Saturday in a sign of boiling anger over a massive car bomb that killed a top security official and seven other people a day earlier — a devastating attack that threatened to bring Syria's civil war to Lebanon.(AP Photo/ Mohammed Zaatari)