WTF?

I just watched a story on the local news about dangers in Philadelphia elementary schools. They showed video footage of children playing in schoolyards. They were beating the sh*t out of each other - pulling hair, pummeling, punching, kicking, wrestling, and stomping. The reporter seemed surprised. The footage could have come from my school. This behavior is playing to my kids. It's all they know. I broke up two kids who were smacking the crap out of each other during recess. "Oh Mr. we just playing." Blood was pouring out of the kid's nose who told me this. The other kid had scratches and the knee torn out of his pants. WTF?