The 74-year-old actor - a longtime critic of the USA president - attended the ceremony on Sunday night at New York's Radio City Music Hall to introduce a performance by legendary rocker Bruce Springsteen.
A day after he took a swipe at President Donald Trump, Robert De Niro has apologized - not to the commander-in-chief but for him. After leaving the summit, Trump quickly reneged on a joint communique after Trudeau reiterated to reporters that USA tariffs on Canada that site national security as a rationale are "insulting" to Canadians.
His economic adviser then went on CNN to say that Trudeau had "stabbed Trump in the back" with his comments on tariffs.
These comments are the latest in a slew of public appearances in which the actor made public comments lambasting the president.
It's not the first time De Niro has spoken out against Trump.
De Niro, left, and Chef Nobu Matsuhisa are partners on the new project.
"When you see celebrities say I hope the economy bottoms out to get rid of Trump, I think that helps Trump", Ruhle said.
"F-- Trump!" he roared, even though foul language and profanities are prohibited on public airwaves in the United States. It was censored for the TV audience, but De Niro's lips were easy to read. "Boy, do we need that now".
The Oscar-winner, who has repeatedly criticised the president, reportedly chided Mr Trump while speaking at a ceremony for the Jimmy and Rosemary Breslin "American Writer Award" at the Tweed Courthouse in Lower Manhattan on June 8. "Good for him. I mean, it's Robert De Niro".
De Niro, a noted liberal, has been increasingly critical of Trump, a Republican, at smaller show business events, but none have the high profile and audience of the Tony Awards.
He applauded De Niro.