Sticks and stones may break my bones. How about concrete blocks?

AP took this picture with this caption: A Palestinian boy prepares to throw a brick at Israeli troops operating in the West Bank village of Beta near Nablus, Thursday, Feb. 21, 2008.(AP Photo/Majdi Mohammed) A standard brick weighs about 6 lbs. Let's look a bit closer at what exactly this boy is hurling: This is no "brick," this is a concrete block weighing some 30 lbs. There is no question that this is a lethal weapon, especially thrown from a height. The intent is to kill. What should the legitimate response of a soldier be when faced with a 30 lb. projectile? And why do you suppose the AP would describe this as merely a "brick?"