Before you start whingeing on about why the acclaimed documentarian Errol Morris decided to give the evil Steve Bannon a soapbox as the subject of Morris’ new documentary, hold on.

“American Dharma” is a great example of why more speech is better, as a rule. And why letting even demagogues – and sometimes especially demagogues – explain themselves and face critical questioning is a revealing process.

In this instance, Bannon exposes himself in the film as a man with nothing much to offer in the way of ideology. He’s got confidence in spades and cynicism to spare, all in the pursuit of destroying the establishment and its institutions.

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