Lets get real.
Look nobody really has the right to kill. And they werent exacting justice, more like jealousy. Do you think the fact that they walked into school with guns like they were a couple of gods and shot people that they were some sort of heros?? your wrong, they werent victims and they werent misunderstood, they were assholes. Putting yourself on a pedestle and believing that you have to exterminate the scourge from the earth will only get you a one way ticket to hell.