The Nation's Only Anti-Liberal Playwright?

Terry Teachout ponders David Mamet's conversion to a "libertarian-flavored conservatism." And, yes, Mamet's drift away from right-thinking liberalism does give his plays a kind of grit and realism lacking in, say, the ideological propaganda of a Kushner:

"As a child of the 60's," he wrote in the Village Voice, "I
accepted as an article of faith ... that people are generally good at
heart." It was this credo that he specifically repudiated in that same
essay:

I do not think that people...