Filmmaker Michael Moore lashed out at President Donald Trump's easing of Obama administration energy regulations – asserting it will trigger the "extinction of human life."

Moore's dramatic declaration came in a tweet storm following Trump's order Tuesday rolling back regulations to curb carbon emissions.

Trump has called global warming a "hoax" invented by the Chinese, and has repeatedly criticized the power-plant rule as an attack on American workers and the U.S. coal industry.

"Historians in the near future will mark today, March 28, 2017, as the day the extinction of human life on earth began," Moore tweeted, adding the Environmental Protection Agency has been prevented from focusing on "climate change."

Historians in the near future will mark today, March 28, 2017, as the day the extinction of human life on earth began, thanks 2 Donald Trump — Michael Moore (@MMFlint) March 28, 2017

Trump has signed orders killing all of Obama's climate change regulations. The EPA is prohibited henceforth from focusing on climate change. — Michael Moore (@MMFlint) March 28, 2017

Moore, who predicted Trump would win the White House, is now focused on resistance to his agenda.