(CNSNews.com) - Liberal activists, stung by their election loss, have been angling to get rid of President Trump since the day he took office.

Some of them are now seizing on the resignation of National Security Director Michael Flynn as the scandal they need to topple Trump -- or more of his top advisers.

In his resignation letter, Flynn wrote, “because of the fast pace of events, I inadvertently briefed the Vice President-Elect and others with incomplete information regarding my phone calls with the Russian Ambassador.” Flynn reportedly did discuss sanctions with the Russian ambassador, but he didn't tell that to Vice President Pence, who denied it on national television.

In a series of furious tweets early Tuesday morning, film-maker Michael Moore, the epitome of the angry liberal, called both Flynn and Trump traitors, demanding either Trump's impeachment or resignation -- whichever comes first, presumably.

Around the same time, two congressional Democrats, expressing shock and dismay, are demanding a "full classified briefing by all relevant agencies," including the FBI and the Justice Department, to find out who authorized Flynn's conversations with the Russians, who "permitted them," and who "continued to let him have access to our most sensitive national security information despite knowing these risks."

"We need to know who else within the White House is a current and ongoing risk to our national security," Rep. John Conyers (D-Mich.), ranking member on the House Judiciary Committee, and Rep. Elijah E. Cummings (D-Md.), ranking member on the House Committee on Oversight and Government Reform, said in statement.

Here's an indication of where the left goes from here, as illustrated by Moore's tweets and the Democrats' call for an investigation.

The full, Feb. 14 statement from Conyers and Cummings reads as follows:

We were shocked and dismayed to learn this evening of reports that three weeks ago, U.S. law enforcement officials warned the White House Counsel that General Flynn had provided false information to the public about his communications with the Russian government, but that the Trump Administration apparently did nothing about it – neither to clarify the truth to the American public or to stop General Flynn from being an ongoing national security concern. Just a few hours before he resigned, Kellyanne Conway said Mr. Trump had “full confidence in Flynn.” The reality is General Flynn was unfit to be the National Security Advisor, and should have been dismissed three weeks ago. Now, we in Congress need to know who authorized his actions, permitted them, and continued to let him have access to our most sensitive national security information despite knowing these risks. We need to know who else within the White House is a current and ongoing risk to our national security. While Congressional Republicans have turned a blind eye to their constitutional duty to conduct oversight on these issues, we Democrats believe that this new disclosure warrants a full classified briefing by all relevant agencies, including the Department of Justice and the FBI, as soon as possible and certainly before Thursday, February 16. We are communicating this request to the Department of Justice and FBI this evening.”

Moore's tweets are reproduced here, beginning with the most recent as of this writing: