House impeachment manager Rep. Diana DeGette cited an analysis that found mentions of "civil war" quadrupled on Parler in the hour after Donald Trump said "show strength."

"We also have another perspective from this moment: online extremist chatter. At the same time as the people in the crowd shouted, 'Take the Capitol building,' as President Trump said, 'show strength,' a person posted to Parler saying, 'time to fight, civil war is upon us,'" Degette said. "Another user said, 'we're going to have the civil war. Get ready.'" An analysis found members of civil war crime quadrupled on Parler in the hour after Donald Trump said, 'show strength.' When insurrectionists got to the Capitol, they continued those rally cries."

House impeachment manager Rep. Diana DeGette, D-Colo., also disclosed that one notable protester, Jacob Anthony Angeli Chansley, who stormed the Capitol while donning face paint, no shirt and a furry hat with horns, left a threatening note to Vice President Mike Pence.

"Chansley left a threatening note for Vice President Pence right there on the Senate dais. It read, quote, 'it's only a matter of time. Justice is coming,'" DeGette said.

Managers on Wednesday used never-before-seen Capitol security footage to show Pence and his family fleeing the Senate chamber at 2:26 p.m. on Jan. 6. Trump, meanwhile at the White House, posted an attack on Pence to Twitter just two minutes earlier at 2:24 p.m.

They also presented video of Chansley telling a reporter it was time to go home from the Capitol only once Trump put out a pre-recorded video asking them to -- over three-and-a-half hours after the attack began.

"Have you noticed throughout this presentation the uncanny similarity over and over and over again of what all these people are saying?" DeGette asked the chamber. "They said what Donald Trump said, and that echoed each other. 'Stand back and standby.' 'Stop the steal.' 'Fight like hell.' 'Trump sent us.' 'We are listening to Trump.'"

Lead House manager, Rep. Jamie Raskin, D-Md., said that the violent riot on Jan. 6 was a "culmination" of incitement to violence from Trump. He played a series of video clips from over several years, which Raskin said showed Trump urging violence.

"This pro-Trump insurrection did not spring into life out of thin air. We saw how Trump spent months cultivating America's most dangerous extremist groups," Raskin said. "We saw how he riled them up with corrosive lies and violent rhetoric, so much so that they were ready and eager for their most dangerous mission, invalidating the will of the people to keep Donald Trump in office."

Raskin cited the increase in hate groups and heightened threat from domestic terror, saying that Trump incited the anger of these groups for "his own political gain." The House managers also played footage from the Charlottesville, Virginia, "Unite the Right" rally which led to the death of one woman.

"These tactics were road tested. January 6th was a culmination of the president's actions, not an aberration from them," Raskin said. "The insurrection was the most violent and dangerous episode so far in Donald Trump's continuing pattern and practice of inciting violence -- but I emphasize 'so far.'"

House impeachment manager Rep. Diana DeGette continued to lay out the case against Trump on Thursday and argued how the insurrectionists themselves believed that they were following the president's marching orders.

"They truly believed that the whole intrusion was at the president's orders -- and we know that because they said so," DeGette said. "Many of them actually posed for pictures, bragging about it on social media, and they tagged Mr. Trump in tweets. Folks, this was not a hidden crime. The president told them to be there, and so they actually believed they would face no punishment."

Her main message is that rioters were there, solely, "because the president told them to be."

"The crowd at Donald Trump's speech echoed and chanted his words, and when people in the crowd followed his direction and marched to the Capitol, they chanted the same words as they breached this building," she said. "More and more insurrectionists are admitting that they came at Trump's direction."

DeGette went on to show news reports and video clips of rioters during and following the Jan. 6 attack saying they believed they were acting lawfully and as Trump had requested.

She said rioters would not have been in Washington had they not been invited by the president to falsely "stop the steal" -- and they would not have stormed the Capitol if Trump didn't embolden them to do so.

After the Senate decided it will not call any witnesses, lead House manager Rep. Jamie Raskin, D-Md., was the first to speak during closing arguments. He reiterated the prosecution's case, calling for the conviction of Trump.

"It was suggested by defense counsel that Donald Trump's conduct during the attack, as described in Congresswoman Beutler's statement, is somehow not part of the Constitutional offense for which former President Trump has been charged," Raskin began. "I want to reject that falsehood and that fallacy immediately. After he knew that violence was underway at the Capitol, President Trump took actions that further incited the insurgents to be more inflamed and to take even more extreme, selective, and focused action against Vice President Mike Pence."

Raskin went on to use his time to describe Trump's months-long campaign to discredit the 2020 election results by spreading misinformation, which he argued laid the groundwork for deadly events of Jan. 6. He went on to claim that the former president assembled the mob, incited it and then sent it off to the Capitol during his speech. At every point, Trump sided with the insurrectionists rather than the Congress, Raskin said.

Once when the violence began, Raskin declared that Trump ignored the violence and further incited it by aiming the attacks on his own vice president.

"There has never been a greater betrayal by the president of the United States of his office, and of his oath to the Constitution."

Raskin then took a moment to suggest the GOP used "cancel culture" against one of its leaders, Rep. Liz Cheney, R-Wyo., who voted to impeach Trump in the House.

"Liz Cheney is a hero for standing up for the truth, and resisting this retaliatory cancel culture that she was subjected to."

Raskin emphasized his gratitude toward the Capitol Police, and finished his argument by saying convicting Trump is a vote for the "security of our democracy."

"They attacked this building, they disrupted the peaceful transfer of power, they injured and killed people, convinced that they were acting on his instructions, and with his approval, and protection," Raskin finished. "And while that happened, he further incited them, while failing to defend us. If that's not ground for conviction, if that's not a high crime and misdemeanor against the republic in the United States of America then nothing is. President Trump must be convicted for the safety and security of our democracy and our people."