For grandpa in the stands whose blood pressure spiked from yelling at the ref, triggering a cardiac event?
(Sorry, I'm a little jaded. I umpire HS baseball and softball games; I don't do basketball because the fans are even more psycho than the baseball/softball psycho fans.)
Refereeing girls’ basketball was the worst. You could have called a foul per second, and the parents should have been behind chicken wire.
Try a soccer game where most parents have clue what the rules are.