A self-described communist group burned an American flag outside a Los Angeles hotel Tuesday in protest of President Trump’s arrival in the city, sparking a series of fights with pro-Trump counter-protesters. “America was never great!” chanted a contingent from Revolution Club Los Angeles as they locked hands in a circle outside the Beverly Hills Hotel, a video of the act tweeted by the group shows. That refrain turned to “Humanity first!” as a rabble-rouser in the middle of the circle set Old Glory aflame. Toward the end of the clip, one counter-protester can be seen trying to break into the...