A friend's son was in the building where Cruz opened fire. Prior to the shooting, teachers were preaching the whole thing about everyone being ok and you should be friends with everyone. Before Cruz left school, other students would joke that if somebody was going to commit a school shooting, it would be him. It turns out they were right and they had judged him for who he was, even if they didn't react to that judgement. After the shooting, kids dropped the whole, "Everyone's ok" mentality they were taught and started judging people by their behavior.
I used to be the weird kid who had no friends, so I know what it's like to be left out of things. I'm not the weird guy anymore. I started listening to the criticisms people had of me. He should have been listening to his peers, as they would have -- especially through light teasing -- been pointing him in the right direction, that is towards sanity. Also, the biggest thing I learned is there's a big difference between teasing and bullying. That difference is intent. Teasing is intended to point you in the right direction. Bullying is intended to hurt you.
"Been through Hell? Whaddya bring back for me?" -- A. Brilliant