Something remarkable happened over the weekend after President Trump gave his address at Mount Rushmore. As was to be expected, the mainstream media deplored the speech as “dark and divisive,” but it was also immediately effective. Here’s how. In order to absurdly portray Trump’s speech as a racist appeal to disaffected white voters, the media and the Democrats had to pretend that Trump was only defending confederate statues when he spoke about our nation’s monuments. Now, this is obviously an outright and outrageous lie, but in this case the perfidy of fake fact outfits like the New York Times and...