As far as I'm aware, all these kids have been bullied and/or have suffered from major psychological issues. Should we not start focusing our efforts there, to prevent these killings instead of reacting to them?
In any situation where kids are unsupervised by adults, bullying is a very real danger. So the first step should be to see that kids are always supervised.
http://www.chicagotribune.com/news/n...518-story.html