“Indeed, the road to Trumpism began with ideological conservatives cynically exploiting America's racial divisions. The modern Republican Party's central policy agenda of cutting taxes on the rich while slashing benefits has never been very popular, even among its own voters. It won elections nonetheless by getting working-class whites to think of themselves as a group under siege, and to see government programs as giveaways to Those People.”

-- Paul Krugman, “Hilary and the Horizontals,” The New York Times, June 10, or two days before the Orlando shooting. Trump doubled down on that.