In the trailer for his new documentary Fahrenheit 11/9, filmmaker Michael Moore boldly proclaims Donald Trump to be the "the last president of the United States."

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As spurious a claim that might seem - the Declaration of Independence was signed some 241 years ago, after all - it is understandable in a modern day America where the political news cycle spins like a tornado.

Moore's new documentary sets out to explore the political and social impact of Trump's election and the fractious mood of the so-called "United" States in its aftermath.

"Can't take the insanity any more?" the trailer asks. "This is the movie that will end the madness."

The trailer permits only the tiniest of glimpses into the film, but what is revealed is a deeply divided culture.

And you don't need a Michael Moore documentary to tell you that; American social and political division is apparent on the nation's news channels which, in unison, have become a cacophany of opinion, spin and argument.

"How the f--- did this happen?" Moore asks in the trailer.

While Trump's election in 2016 is the obvious pivot for the trailer, the documentary appears to explore a broader raft of issues which the United States is tackling.

Notably, in the trailer Moore is seen delivering a tankload of water from Flint, Michigan, to the home of Michigan Governor Rick Snyder.

That city's water supply was poisoned when, in 2014, its source was switched from Lake Huron and the Detroit River to the cheaper Flint River, whose water flow was exposed to lead contamination.

Moore also speaks to David Hogg, one of the survivors of the Marjory Stoneman Douglas High School shooting who has, in the wake of the incident, become a high profile activist against growing gun violence in the US.

In another scene, political lobbyist Roger Stone warns Moore about attempts to impeach Trump. "Try to impeach him [and] you will have a spasm of violence in this country like you've never seen," Stone says.

Moore also interviews politician Alexandria Ocasio-Cortez, 28, who in June won the Democratic primary in New York's 14th congressional district over Democratic caucus chair Joseph Crowley.

"If nobody's going to do it, then I gotta do it," Ocasio-Cortez says.

The documentary film's title is a play on the iconic novel Fahrenheit 451 by Ray Bradbury, first published in 1953, about a dystopian future America where knowledge is considered dangerous and books are outlawed and burned.

It is also a play on Moore's earlier documentary, Fahrenheit 9/11, about the presidency of George W. Bush.

Fahrenheit 11/9 will premiere at the Toronto International Film Festival in early September.