In the real world, we can't avoid the cases of encountering people who are fond of discriminating or judging other people. One way to help someone overcome such discriminations is to: cover your ears. Don't listen to a single bit of thing they say. They'll get tired someday. If they see you not caring, they might leave you alone. Second is to: prove to them that you're better. Show them you're better in class, in work or in anything. Nobody's good at everything but what I'm trying to say is to hit the points that your enemy is at its weakest. That can help you to overcome them.