Why do people hate school shooters?

[Losty]

Crap, yea when you are saying he "admires" them that is a sign of severe mental issues.

Or adolescence combined with the anonymity of the internet, in which case an angry and confused young person feels free to see just how far he can test authority before the ban-hammer starts to swing.

Or garden-variety trolling, of which we get our fair share. "(Awful/Evil person) was right" is almost guaranteed to get a few pages of replies.

I still think pathetic loser covered all bases quite nicely.