People who bring up Columbine H.S. rarely make mention of the rather large propane BOMBS that Klebold and Harris dropped in the cafeteria without being noticed. If their detonators had worked their would've been HUNDREDS of deaths, not a mere thirteen. In fact, had they not been armed, there's a very real chance they may have recovered their bombs and tried again.

Guns can kill people, but not as many as barbecue fuel.