There are a lot of sociopaths in this world, but those that are younger need to be focused on. You need to remove them from that kind of situation that enables them to dominate over people like that, and you need to help them form real, significant bonds with other peers. Counsel them and help them come to terms with their insecurities. Don't be kicking anyone's ass or getting all uppitty. Bullies are usually just as miserable as those they torture.