Well I don't think he supports it, its just that world can be a very cruel place and sending an innocent kid into that world without any kind of preparation can cause these kind of things to happen. There isn't anything you can do, you have no control over what someone will or won't do or say on an online game. What you do have control over however, is the ability to talk to your brother and let him know that there are a lot of ignorant people in this world and show him how to deal with those types of experiences if they were to ever arise again.