Trump’s provocative tweet saying “when the looting starts, the shooting starts” moved Mayor Lightfoot to label it “profoundly dangerous.” And then in code she turned profane. “I will encode what I really want to say to Donald Trump.  It’s two words:  It begins with F and it ends with you!” As for marches against police brutality here in Chicago, the mayor welcomed them, but called on the marchers to stay 6 feet apart and wear face masks.