Michael Moore has exposed many ugly truths throughout his career as a documentary filmmaker, but now he's taking aim at Hollywood for its lack of diversity among directors - females and people of color.

“Women [and] especially men need to say this, and say it over and over and then do something about it," the Oscar winner said during a discussion Sunday on diversity at the New York Film Festival, where his new documentary "Where to Invade Next" was screened.

A recent University of Southern California survey found that only 1.9 percent of the top-grossing 100 films over the past two years were directed by women.

Urging the Writers Guild of America and Directors Guild of America to address the issue, he adds, "we have to fix this. This is absolutely wrong." "This is the most liberal of all industries, when you use the word ‘industry’ in this country, and for it to be so shamelessly white and male?”

Last year, only two women and four African Americans helmed the top 700 films, the study found. Moore says the lack of representation by non-white male directors impacts storytelling from a culturally unique perspective.

“I’m missing out on her story. Their stories. That person," he said. "When you block out whole groups of film by that cinema, what are the great films that you and I are missing because their great voices can’t be heard? I want to go to that movie. I want to hear that voice. I’m being denied that voice by a system that’s sent out to give the reins to white men."

He continued: “It’s a form of apartheid, folks, when a minority controls everything and the majority gets a bone thrown to them. That’s just absolutely wrong.”

Watch the trailer for "Where to Invade Next" below:

https://www.youtube.com/watch?v=WXVYiF5YiII