I am hearing some support for Donald Trump coming from fellow travelers — tea partiers, constitutional conservatives, and even a few libertarians — in my grassroots community. So I have to ask: What's up with that? At a superficial level, I get it. I get the economic anxiety and a belief, completely justified, that insiders in Washington, D.C. are really all about themselves, not the rest of us. I also get the profound political paradigm shift that is taking control from party bosses and shifting it back to the voters and activists that participate in the political process. This democratization...