I was relentlessly bullied in high school.
I subscribe to the Mongolian maxim that revenge is a dish best serve cold.
I pretty much dealt with the bullying with quiet, stoic dignity until the bully turned 18. Then, when he went COMPLETELY over the line and ended up giving me a concussion bad enough for me to miss 2 days of school, I had my parents press assault charges against him. He ended up with an "assault against a minor" conviction.
He'll never own a gun, be able to have a clearance, work with children, or win a custody battle ever again in his life.
Bullies need to know that if they pick on the smart kids because they are smart kids, that their victims will eventually have their revenge, and it will last for the rest of the bully's life...
Kids today who feel they need to resort to firearms because they are being bullied are being victimized TWICE--once by the bully, an a second time by an educational system that hasn't taught them how to be politically and legally crafty.
Not excusing the actions of the shooter, but I think we need to understand just where he's coming from--he was probably at his wits end, the school was doing nothing about the bully, and the educational system was teaching him to submit to ANYONE or ANYTHING that had superior force (because that's what they want--passive slaves). The kid probably TRULY felt he had no other choice, in his twisted, prescription-drug-addled, "might-makes right" brainwashed mind.
Add onto this the VERY high possibility that the shooter was on a cocktail of psychotropic drugs like Ritalin, Prozac, or whatever, and you've got what amounts to a GUARANTEE that someday, somewhere, there's gonna be a few kids that finally "snap"...