This. My daughter is in 7th grade volleyball, and it's downright embarrassing, some of the behavior I've witnessed from parents. I've heard parents, extremely loudly, heckle the ref for several minutes after a call. Sometimes it's not even a bad call. ( Oh, now you make that call in the last game of the match!) 2 weeks ago, at an invitational tournament, our team knocked off one of the heavy favorites, in a thrilling match. All 5 games went to extra points. After the match we left the gym to go get refreshments, and the other teams coach was surrounded by angry parents, at least 5 or 6 of them, demanding an explanation. This is 7th grade, I was in utter disbelief. Why anyone would volunteer to coach or ref youth sports under these circumstances, well most of them have my respect for that.