Of course, there have always been “nutty” sports parents. But it was usually just one guy who screamed excessively that everyone else sort of avoided. Now, it’s far more likely for multiple parents to join in. There’s a group dynamic at work that empowers people. And, for sure, as has been said, watching your kid play any game is, emotionally, like watching your favorite pro team play in a championship game — multiplied by about 100.