He didn't write stories about people getting killed. He wrote one story about one person getting killed. In English class when he was speaking English, everyone shouted "Go home to China!", because he wasn't good at speaking English. I bet he became so crazy because people teased and bullied him to a level where he just couldn't take it anymore. Some say he also lost a girlfriend. Losing someone you love, while being bullied by everyone could most likely make him crazy. In some way I actually understand him. When being bullied you sometimes feel like kicking the bullies asses. Because he was such a quiet person, he had the hate growing up inside him. The people deserved to be punished, but killing them isn't the way.