Watch: Rosie O'Donnell comes unhinged, rails against Trump in protest outside the White House

Comic actress and former television host Rosie O'Donnell showed up outside the White House on Tuesday, just hours before President Donald Trump delivered his first address to a joint session of Congress, with a very pointed message for the president and his administration: "He's going down."

Speaking to a crowd outside 1600 Pennsylvania Ave. on a rainy evening in Washington, D.C., O'Donnell mocked "Donald Trump math."

"Look at this crowd of 1.8 million people. This is Donald Trump math, ladies and gentlemen. You say it, the media buys it," O'Donnell said, referring to the controversy over Trump's inauguration crowd size.

O'Donnell went on to quote from the Declaration of Independence:

We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness. That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed. That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government.

"That is why we are here," O'Donnell said.

The comedian went on to call attention to reports that people within Trump's campaign had frequent contact with the Russian government, accusations the White House has repeatedly denied. Trump himself referred to the "whole Russian thing" during a February news conference as a "ruse."

Federal intelligence agencies, as well as at least two congressional committees, are conducting investigations into the Russian allegations.

"This is not Russia," O'Donnell said Tuesday while railing against the president. "To Donald Trump and his pathetic band of white, privileged, criminal businessmen, I would like to say to him, 'Nyet, sir. Nyet. Nyet. Nyet.'

"No we won't. We've seen what you have done, sir. We have seen your connections with Russia," O'Donnell continued. "The game is over. The internet rules. All media is universal. The truth matters, even if our major media companies will not call him a liar, we will."

There is currently no evidence that directly ties Trump to Moscow, although some critics have suggested the proof lies in Trump's still-unreleased tax returns. Trump has said repeatedly throughout the campaign that he didn't release them because he was under a routine IRS audit.

Nevertheless, O'Donnell continued to last out against the media for not calling Trump a "liar," although a number of major media outlets have used the term in headlines and stories on other issues in which Trump has misstated facts.

"Cut it down to the least common denominator like he does," O'Donnell urged the media.

O'Donnell did an impersonation of Trump to illustrate her point, using some of Trump's favorite words and phrases.

"How dare you, Donald Trump. This is America. It's not yours. It's not corporately-owned. It is of the people, by the people and for the people. And we the people will not stand for it," O'Donnell said, later telling the crowd, "I am here with you, because we the people will get him out."

After the protest, O'Donnell told Pajamas Media's Nicholas Ballasy that she has "faith" that Republican members of Congress will stand up against Trump amid "mounting" information regarding Trump's alleged ties to Russia.

"We see it. He can't lie about it. He's going down and so will all of his administration. The charge is treason," O'Donnell said.