Metal detectors only stop concealed carry. They wouldn't stop a kid from walking in shooting. Since you fail to deal with the reality, watch the first Matrix movie and see how metal detectors worked.
The fact is the police probably did everything they could do. They can't run in shooting until they figure out who to shoot at. They don't know if he rigged up bombs or other traps.
More campus 'security' wouldn't stop it, it would just raise tuition and probably cause more students to go nuts.
Well no, obviously they wouldn't, but it would at least be a step in the right direction. I was just trying to counteract rediculous ideas such as giving everyone concealed weapons.
The best solution would be to stop these maniacs before they get guns, which is obviously a difficult thing.