Robert De Niro — one of Hollywood’s most outspoken critics of President TrumpDonald John TrumpPapadopoulos on AG's new powers: 'Trump is now on the offense' Pelosi uses Trump to her advantage Mike Pence delivers West Point commencement address MORE — says Democrats need “to be more aggressive” in standing up to the commander in chief.

“The things that Trump has done, if Obama had done one-fiftieth, they’d be all over him,” De Niro said in an interview with The Guardian published Sunday.

“That’s why I feel that Democrats have to be more aggressive,” the Academy Award winner continued.

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While Michelle ObamaMichelle LeVaughn Robinson ObamaTrump to meet with Prince Harry during UK visit Michelle Obama to headline Essence Festival Obama shares tribute to Michelle to celebrate Mother's Day MORE famously said “When they go low, we go high,” at the 2016 Democratic National Convention, the 75-year-old actor, who plays special counsel Robert MuellerRobert (Bob) Swan MuellerThe Hill's 12:30 Report: Trump orders more troops to Mideast amid Iran tensions Trump: Democrats just want Mueller to testify for a 'do-over' Graham: Mueller investigation a 'political rectal exam' MORE on “Saturday Night Live,” said he would advise a different approach.

“You’ve got to stand up. You can’t be so gentlemanly all the time because you’ve just got to say: ‘Sorry, I’m nice to a point, then I’ve got to push back.’ ”

In the same interview, De Niro also said he considers Trump a fascist and a white supremacist. 

De Niro has railed against the president in countless interviews and public appearances, saying onstage at last year’s Tony Awards, “F--- Trump!” He has also referred to Trump as a “jerkoff in chief” and a “f---ing idiot.”

Trump has hit back at De Niro in the past, nicknaming him “Punchy” and dubbing him a “very low IQ individual” in a tweet last year.