How pro sports leagues are trying to address bad fan behavior

A wave of unruly fan incidents at NBA playoff games has raised arena security efforts as teams move to ban fans caught in the act. In a period of just a few days during the playoffs, security at NBA arenas dealt with fans accused of making vulgar and racist comments to the family of Memphis Grizzlies guard Ja Morant, dumping popcorn on Washington Wizards guard Russell Westbrook, spitting on Atlanta Hawks guard Trae Young and throwing a water bottle at Brooklyn Nets guard Kyrie Irving.  It’s…