"In 2014, Ian Haney López in Dog Whistle Politics named and explained the coded racial appeals exploited by right-wing politicians over the last half century--and thereby anticipated the 2016 presidential election. Now the country is heading into what will surely be one of the most consequential elections ever, with the Right gearing up to exploit racial fear-mongering to divide and distract, and the Left splintered over the next step forward. Some...