Actors are strange folk and generally out of touch, but Matt Damon’s cluelessness about Donald Trump supporters might really take the Hollywood cake. The actor — known for “Good Will Hunting,” “Saving Private Ryan” and the “Bourne” franchise, among other roles — is an outspoken leftist even by the standards of Tinseltown who had to stoop to play a Trump supporter in his latest film, “Stillwater.” The movie sees him playing an oil rig worker whose daughter gets caught up in a European murder case a la Amanda Knox, according to Reuters. How do you play a Trump supporter? This...