Filmmaker Michael Moore dubs President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE the "last president of the United States" in the trailer for his new documentary "Fahrenheit 11/9," which is about the 45th commander in chief and his administration.

"Ladies and gentlemen, the last president of the United States," Moore says in a voiceover as Trump stares into the camera.

The trailer, released by HuffPost on Thursday, shows Moore and some of the prominent public figures of the Trump era: Parkland, Fla., shooting survivors David Hogg and Emma González; former Trump campaign adviser Roger Stone Roger Jason StoneThe agony of justice Our Constitution is under attack by Attorney General William Barr Justice IG investigating Stone sentencing: report MORE; and rising progressive star House candidate Alexandria Ocasio-Cortez.

Here's the exclusive trailer for Michael Moore's (@MMFlint) newest documentary "Fahrenheit 11/9." It's in theaters Sept. 21. pic.twitter.com/eHLPy1J9o4 — HuffPost (@HuffPost) August 9, 2018

"Can’t take the insanity anymore?" reads text that emerges in between clips of last year's protests in Charlottesville, Va., and Trump rallies. "This is the movie that will end the madness."

Moore told HuffPost that he hopes the film exposes the "grave danger" posed by Trump.

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"American journalism schools have not trained students how to cover an authoritarian leader," Moore told the online media outlet. "Our media has no idea what it is up against. They’re getting steamrolled by a tyrant because Trump understands media and understands the country he lives in more than those that cover him do. This puts us all in grave danger."

"If nothing else, I hope this film exposes that grave danger and shows people the way out," Moore said.