Moore, the Oscar-winning filmmaker behind Bowling for Columbine, released a trailer for the film ahead of the November midterm elections, in which he asks “How the f**k did this happen?”
Referring to Mr Trump as “the last president of the United States,” the documentary preview includes references to the Marjory Stoneman Douglas High School shooting, as well as the Flint water crisis.
The documentary comes as a sequel of sorts to Moore’s previous George W Bush documentary, Fahrenheit 9/11 - the highest-grossing documentary ever - which was released in 2004 and depicted the then President’s war on terror.
Since Fahrenheit 9/11, Moore also released Capitalism: A Love Story, which provided a brutal look at the American capitalist system, and is available to watch on US Netflix.
In his newest politically-charged film, the filmmaker warns of the coming mayhem as Trump nears his second year of presidency.
Moore has edited Mr Trump to say over images of the United States burning “The American Dream is… dead. Stop resisting.”
The preview also shows Moore taking matters into his own hands by using Flint water to hose down the gated home of Michigan Governor Rick Snyder.
The film is set to premiere at the 2018 Toronto International Film Festival in September.
By releasing the film before the midterms, it is Moore's hope that it gets "millions of people to the polls."
"We're going to bring Trump down," the filmmaker told Bill Maher.
Fahrenheit 11/9 will be released in theatres on September 21.