Think what would have happened if any one of the victims in Norris Hall had a gun with. The things would have been completely different. The school does not allow guns in the campus, which is good, but then how he brings a gun on campus? If they can not implement their policy, then change the policy, allow everyone to carry gun, then at least they will be able to defend themselves. This works same as nuclear weapons. No country wants to use nuclear weapon against other because everyone has it.