I was looking at my brother Mike's Facebook page last night and I found an old post about Trump's disastrous press conference in Helsinki. There was a guy on the thread named Tim, whom I don't know and don't particularly want to know, who kept backing Trump and presenting a lot of what Mike aptly called "junior high BS"—slogans and cliches, ad hominem attacks, regurgitated talking points from the Drudge Report or Breitbart, and so forth. When Mike challenged him to provide some genuine docume...