That’s a doctored clip from his documentary about his stand-up show.
Conservatives don’t seem to understand that he’s taken the piss with them.
http://www.thedailybeast.com/articles/2016/10/27/michael-moore-to-megyn-kelly-trump-totally-mischaracterized-trumpland-film.html
As he told Kelly on Thursday night, the clip that has gone viral in “TrumpLand” was “doctored” so that it cuts off just before he delivers his primary message. “It will feel good,” is the last thing Moore can be heard saying in the clip Trump himself shared. But his next line is, “For a day, or maybe a week.”
“But when you find out that your life isn’t going to get any better under President Trump and will probably get worse,” he continued on Fox News, “that’s when you’re going to realize what the Brits have realized,” referring to the Brexit vote.
“If we elect Donald Trump as president of this country, it won’t be the same country after four years,” he added. “I’m absolutely convinced of that.
This is the most vile, disgusting candidate that’s ever run for office in this country.”