This incessant clamoring by voters and punditry for better "leaders" and more "leadership" is one of the most unsavory, dangerous, and un-American tendencies in political discourse. When Donald Trump was asked last week by Joe Scarborough what he made of an endorsement from Vladimir Putin -- a thug who's probably murdered journalists and political opponents and more -- the GOP presidential front-runner responded, "He's running his country, and at least he's a leader, unlike what we have in this country." Then he offered an incredibly dumb moral equivalency about how the United States also does "plenty of killing." There was...