Some of America’s most prominent historians gave an urgent warning about the state of American democracy as they gathered on Capitol Hill on Thursday to commemorate the 6 January insurrection.

Doris Kearns Goodwin and Jon Meacham condemned the attack on the Capitol, which was carried out by a group of former president Donald Trump’s supporters to disrupt the certification of Joe Biden’s victory in the 2020 election.

They warned that the US remained at a crucial turning point amid ongoing threats to its democratic systems.

“What you saw a year ago today was the worst instincts of both human nature and American politics,” Meacham said. “And it’s either a step on the way to the abyss or it is a call to arms figuratively for citizens to engage.”

Echoing Meacham’s message, Goodwin argued that this moment represents an opportunity for Americans to rededicate themselves to the cause of democracy, citing the example set by those who fought for the Union in the civil war and marched for civil rights in the 1960’s.

“We’ve come through these really tough times before,” Goodwin said. “We’ve had lots of people who were willing to step up and put their public lives against their private lives. And that’s what we’ve got to depend on today. That’s what we need in these years and months ahead.”

The historians’ comments came as many Americans, particularly those who support Trump, continue to deny the dark reality of the Capitol insurrection.

Only about 4 in 10 Republicans describe the 6 January attack as very violent or extremely violent, according to a recent AP-NORC poll. About 30% of Republicans say the insurrection was not violent at all, while another 30% say it was only somewhat violent.

The insurrection resulted in the deaths of five people, including US Capitol police officer Brian Sicknick. In the year since, four other law enforcement officers who responded to the Capitol that day – Capitol police officer Howard Liebengood, and Gunther Hashida, Kyle DeFreytag and Jeffrey Smith of Washington’s Metropolitan police department – have died by suicide. More than 100 other officers were injured on 6 January, and many of them continue to struggle with traumatic brain injuries, post-traumatic stress disorder and anxiety.

At the historians’ event, House speaker Nancy Pelosi played a video depicting some of the violence that occurred during the insurrection. The video included footage showing law enforcement officers being beaten and attacked with chemical spray and hockey sticks by insurrectionists.

“One year later, it is essential that we do not allow anyone to rewrite history or whitewash the gravity of what took place,” Pelosi said.

Despite the chilling evidence of the insurrection’s devastating consequences, Trump himself used the anniversary as an opportunity to spread the “big lie” of widespread fraud in the 2020 election and downplay the violence of the attack.

“To watch Biden speaking is very hurtful to many people. They’re the ones who tried to stop the peaceful transfer with a rigged election,” Trump said in a statement full of wrong and baseless allegations. “Never forget the crime of the 2020 presidential election.”

In his own scathing remarks to commemorate the anniversary of the attack, Biden accused his predecessor of having “created and spread a web of lies about the 2020 election,” and the president underscored the need to set the record straight about 6 January.

“The former president and his supporters are trying to rewrite history. They want you to see election day as the day of insurrection and the riot that took place here on January 6th as the true expression of the will of the people,” Biden said on Capitol Hill. “Can you think of a more twisted way to look at this country – to look at America? I cannot.”

Pointing to Trump and his allies’ alarming efforts to downplay the insurrection, Goodwin argued that the work of the House select committee investigating the Capitol attack was vital and could help prevent similar violence in the future.

“We have to retell the story of what happened on January 6, with all of the gaps filled in,” Goodwin said. “And I do believe that a line will be drawn.”