Ruby, he became angry because you yelled at him. There was no reason to yell. You need to learn professionalism. He is not doing this for his own sadistic pleasure. That is YOU making yourself into the victim, once again. You yelled at your supervisor. Something one should never do in a professional work environment. Of course he got angry then. You really need to learn behavior management. I'm afraid you are not ready to lead others or supervise others. There is no yelling involved in professionalism.