Exactly two months ago, the Ku Klux Klan, Alt-Right, Neo-Nazis, and private militia descended on Charlottesville, Virginia, for the “Unite the Right”rally. Many of the attendees, photos and videos show, carried heavy assault rifles, handguns, and shields—equipment that Virginia Governor Terry McAuliffe later told The New York Times was better than that the state police had. Inevitably, violence broke out. One white nationalist fired a gun at counter protesters, while police looked on. Another Na…