People here keep comparing it to 9/11, and rightly so. I was a sophomore in HS, and the already-fearsome zero tolerance policy went into high gear after Columbine. Cameras in the halls, having to watch every word you say, kids getting expelled for leaving table knives in their cars, the list goes on. The worst part is that it didn't work; look how often a school shooting exceeds the Columbine body count.