On Saturday, the National Policy Institute, a white-supremacist (though its adherents would prefer "race realists" or something more sanitized) think tank led by Richard Spencer, hosted its conference in the atrium of the Ronald Reagan Building. It's a building that’s just a pebble's throw away from the White House (current home of the first black president of the United States, and the house that Donald Trump, a noted birther and a white-nationalist-supported incoming leader of the free world, is about to redecorate), and also a quick walking distance from Trump's newly opened hotel in DC. The conference, headlined by leading...