Virginia Tech Tragedy

What a crazy thing to do. What made this man want to do somethng of this sort? I cant believe he was aloud to keep attending that school even though there were warning signs with his behavior. The plays he wrote and even showed to other stdents and it wasn't reported, even the knowing of his strange past. Its just so disappointing to know that anything can happen, when your least expecting it. Also its strange how someone you know and go to school to with can swith up and do somethng out of this world.