Unacceptable

I normally understand that kids WILL be kids, but today I almost lost it on a kid and their parent. We have an out of control kid at the bus stop whose parents turn their heads when he misbehaves and hope for the best. Well, "the best" this morning was almost be handling him myself! The rules of the stop haven't changed over the years, first to the stop equals first on the bus, now normally my son has no problems letting the other kids beat him to the stop, but this morning he was first...the little boy wasn't happy and ran toward my son and hit him, do you know his mom didn't even bother to get out of the car? So now I'm torn, should I go and ring their doorbell later this evening or call the school and let them handle it? I will say, "I'm extremely proud of my son for defending himself and his spot in line!", but almost irate at the act that parents aren't more willing to control their offspring. I said it yesterday and I'll say it again, "Just because you can (have kids) doesn't mean you should" and I'll step down from my soapbox...