"He opened my door" is not justification for shooting someone. Even "He was really angry when he opened my door" is a far cry from justification for lethal force.
If that man had opened your door and you had shot him, you would be in for massive legal troubles.
Frankly, I'm not sure why I would sit in my car and watch a large, obviously angry man approach. Drive away. There are other ATMs. I don't care what he wants or why. I'm not preparing for use of force when I have the option to leave.