Perhaps my view of human nature is naive, but I think most people don't really want to hurt us. I believe there is a difference between losing one's temper and confronting someone and in as non-aggressive way possible, letting people know that they've come very close to seriously injuring you. Several years ago a man backing his car out of a parking space while talking on the phone almost ran over a mother pushing a stroller with her child in it. I tapped on his window. He was annoyed, but rolled the window down. When I told him, "Just wanted to make you aware that there was a mother and child behind you and you barely missed them", his face lost all color. He was truly upset and remorseful. He simply hadn't been aware of what he had almost done. Would everyone react the same way? No, most likely not. But, I'd rather approach them as if they would. With that said, I agree pdlamb, when contact has been made that it should be reported.