Mayor Lori Lightfoot is praising U.S. Rep. Bobby Rush for that gift of a video that helps her kick the Chicago police union in the teeth. I don’t think she’ll ever forgive Rush for that despicable slur during her 2019 mayoral campaign. Anyone voting for Lightfoot, Rush said, would have on their hands “the blood of the next young black man or black woman who is killed by the police.” She wants police officers to be licensed. If she gets that, it might make things easier for City Hall to get rid of cops it doesn’t like. This could give...