Sadly, not the first time there has been a shooting in a Montreal college/University. The information coming out about this fellow is fairly grim.
Stuff like this makes me wonder why there is still such a stigma about mental health issues. Maybe if this guy had received some medical interventions for his rage and depression this would never have happened.
And to the folks who allow a "Columbine game" on the Internet, shame on you for capitalizing on such a tragedy.