In July 2016, a WNBA game in Minneapolis turned into a national flashpoint when four off-duty police officers, hired as security for the Minnesota Lynx, abruptly walked away from their posts. What triggered the walkout wasn’t a confrontation, a threat, or a disturbance — it was a set of black pre-game T-shirts worn by the players, shirts meant to honor the dead and spark a conversation the team believed couldn’t wait any longer.