Its the parents fault, thats for sure.
Not proud of this now, but when I was 20, a lady was walkin with her kid next to me at Santa Cruz and her kid kept plowing into me. I told the lady at least 3 times to watch her kid, and she kept lookin at my like she no speaka da englishe, so i ended up tappin her kid on his neck with my ciggie. Guess, what, kid didn't run into me anymore. Sometimes you just have to take matters into your own hands.