An Egyptian protester throws a stone toward soldiers, unseen, as a building burns during clashes near Tahrir Square, in Cairo, Egypt, Saturday, Dec. 17, 2011. (AP Photo/Ahmad Hammad)

Photo by: Ahmad Hammad

An Egyptian protester throws a stone toward soldiers, unseen, as a building burns during clashes near Tahrir Square, in Cairo, Egypt, Saturday, Dec. 17, 2011. (AP Photo/Ahmad Hammad)