When Muhammed swept victorious into the city of Mecca in 630 C.E., one of his first acts was to destroy all of the idols at the Kabbah, one of the holiest sites in the Islamic world. ISIS is taking the prophet's idea to the extreme, attempting to raze art and architecture they deem un-Islamic from their domain. Ancient cities have fallen beneath bulldozers and clouds of dust, while priceless artifacts have been looted from museums and destroyed. Students...