"There’s evil in the world that’s unrepentant, and I’ve experienced it firsthand," Francisco Chairez writes for the Washington Post. Chairez, a Mexican immigrant, spent time in one of Joe Arpaio's infamous "tent cities" following a 2015 conviction for drunk driving. His experience doing time under the former Arizona sheriff is one of the reasons President Trump's pardon of Arpaio Friday left him "disgusted, dispirited, and disappointed in the American political system."