(Bloomberg) -- Whether far-right extremists who attacked the US Capitol were encouraged by or even conspired with then-President Donald Trump will be the subject of Tuesday’s hearing by the House committee investigating the riot.

The panel will also look at the activities of some of the members of Congress regarding Jan. 6, 2021, including a pressure campaign on then-Vice President Mike Pence to reject the Electoral College votes in the House that day.

Here are some things to watch for:

Trump Winks and Tweets

Look for efforts to show Trump supporters regarded Trump’s Dec. 19, 2020, tweet, “Big protest in D.C. on January 6th. Be there, will be wild!” as a call to arms. Message boards did, in fact, show responses openly discussing bringing weapons to Washington and committing violence, and Facebook postings and hashtags such as #OccupyCapitols also resulted.

Then Proud Boys national leader Enrique Tarrio posted on the social media site Parler that the group’s members would “turn out in record numbers on Jan 6th” and would “spread across downtown DC in smaller teams.”

Tarrio, who was not on the Capitol grounds during the riot, was filmed with then Oath Keepers leader Stewart Rhodes in a Washington parking garage on Jan. 5, but it is unclear if that was by chance or planned.

The hearing will also include references to the QAnon movement, supporters of which were in the crowd that stormed the Capitol.

Cipollone Testimony

Pat Cipollone, Trump’s White House counsel, spent more than seven hours on Friday giving closed-door testimony to committee members and staff.

Representative Jamie Raskin told NBC early Tuesday that “Cipollone has corroborated almost everything that we’ve learned from the prior hearings.”

Raskin did not specify what parts of previous testimony Cipollone supported, but said he “certainly did not hear him contradict Cassidy Hutchinson,” who testified Cipollone warned her that for Trump to go to the Capitol could be illegal.

“He had the opportunity to say whatever he wanted to say, so I didn’t see any contradiction there,” Raskin said.

Cipollone has been depicted by the committee as a key witness to the events leading up to and during the Capitol assault. He resisted testifying but eventually acceded, to the chagrin of Trump who said it would chill conversations between presidents and their lawyers in the future.

Excerpts of his videotaped testimony are expected to be aired Tuesday.

Hey Chief, Make a Call

Former White House aide Hutchinson testified at an earlier hearing that Trump on Jan. 5 told his White House Chief of Staff Mark Meadows to reach out to or speak with Trump allies Roger Stone, a longtime political strategist, and Michael Flynn, his former national security adviser, who both have had connections with the Proud Boys or Oath Keepers.

The unstated, and unproven, suggestion was that Trump might have wanted to discuss or learn about plans for the next day.

Stone, a founder of the “Stop the Steal” movement that culminated in the rallies preceding the Jan. 6 attack, had a room at the posh Willard InterContinental hotel in downtown Washington near the White House on Jan. 5 and 6. He vehemently denies he ever received a call or had any contact with Meadows.

Meetings and ‘War Rooms’

The committee is likely to explore precisely what kind of activity was taking place at the Willard, where Trump allies met at so-called “war rooms” on Jan. 5.

Rudy Giuliani and John Eastman were in one room, with former White House chief strategist Steve Bannon and others occasionally present, while Stone and Flynn were in another room the day before the riot, according to a person familiar with the matter.

Hutchinson testified that Meadows told her to work with the Secret Service to arrange for him to go to the Willard on Jan. 5 for a meeting, or meetings, with Giuliani and others. Hutchinson said she advised Meadows against doing so, after which he said he would call in instead.

Raskin says attention also will be given to an Oval Office meeting on the eve of Trump’s Dec. 19 tweet that devolved into cursing. Participants included Giuliani, Sidney Powell, and other election-fraud conspiracists. White House adviser Eric Herschmann, and at times Cipollone and Meadows, also attended.

New Video of Assault

Watch for excerpts or outtakes from the six-hour documentary “Unprecedented” that was released Sunday for streaming on Discovery+.

The British filmmaker, Alex Holder, captured scenes on the ellipse during the Jan. 6 rally. In one, a man in the in the crowd says the words “Joe Biden” and makes a slicing motion across his throat. There is also audio of someone in the crowd saying during the rally “Enough people are here to storm the Capitol.”

There is also video of the attack on the Capitol, including scenes of rioters throwing poles like spears at police officers trying to hold the crowd back.

(Adds Raskin comments from 9th paragraph)

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Author: Billy House and Chris Strohm