http://www.vox.com/2016/7/25/12270880/donald-trump-racism-history
"when you take all of Trump’s actions and comments together, a clear pattern emerges — one that suggests that bigotry is not just campaign opportunism on Trump’s part but a real element of Trump’s personality, character, and career. Yet all along the way, none of this explicit racism was apparently enough to get major Republicans to reconsider their support."