I have witnessed many parents who like to make excuses for their children. They also like to blame the teacher. I have heard several comments such as "well, what did you do to make Bobby mad?" I have never known the proper approach to dealing with these situations.
Sometimes you have to show proof to get results.
Great solution.
I would do the same, I would keep a log of his anger and the situation so they know that you are not instigating it.
This is a very thorough solution. It is very helpful.
Yelling at a parent will never solve a problem. Teachers have to be more professional and respectful even when a parent isn't.
You attract flies with honey and not vinegar! Document, document, document! It also helps if other teachers document similar behaviors too.