Shortly before leaving the White House on Wednesday morning for the Ellipse, where a stage had been set up for him to address supporters, President Donald Trump had a word with Vice President Mike Pence.

Pence repeated what he had told Trump a day earlier: that when he went to Capitol Hill in a few hours to oversee the tallying of the electoral votes that would certify Joe Biden’s victory, he would not have the power to do what the president wanted and overturn the results. Pence was planning to release a letter soon explaining that.

Trump listened, and stewed and chastised Pence as soft. He was somber as he got into the presidential motorcade for the short ride over to the Ellipse, where he made clear in his roughly 70-minute speech that he was furious with Pence and that he wanted the people gathered on the Mall to go to the Capitol immediately afterward in protest of what he falsely claimed was a stolen election.

With his loyal No. 2 no longer so loyal in his eyes and with Congress poised to spend the day brushing aside the protests he had nurtured about the Electoral College outcome, Trump urged his supporters to take another step to back him.

“We want to be so respectful of everybody,” Trump said, before calling his political opponents bad people. “And we are going to have to fight much harder. And Mike Pence is going to have to come through for us, and if he doesn’t, that will be a sad day for our country. Because you’re sworn to uphold our Constitution.”

Calling the outcome of the election “this egregious assault on our democracy,” he said his supporters should “walk down to the Capitol. And we are going to cheer on our brave senators and congressmen and women, and we are probably not going to be cheering so much for some of them. Because you will never take back our country with weakness.”

Trump did not in fact travel with the supporters he urged to go fight for him; he returned to the White House, and berated aides about how the scene had appeared, before taking to Twitter to attack Pence for his stand.

Before Trump took the stage, his personal lawyer, Rudy Giuliani, addressed the crowd and called for “trial by combat” against the Democrats to win the election.

Trump’s eldest son, Donald Trump Jr., warmed up the crowd by warning of challenges to Republican members of Congress who didn’t back the pro-Trump efforts: “We’re coming for you,” he said.

In urging his supporters to see the routine act of certifying the U.S. election results as an illegal affront against him and against them, Donald Trump helped set in motion hours of violence and chaos that continued as darkness fell on Wednesday evening.

“There’s no question the president formed the mob,” Rep. Liz Cheney, R-Wyo., told Fox News. “The president incited the mob. The president addressed the mob. He lit the flame.”

People carrying Trump campaign flags — some of them appearing to be armed — swarmed the Capitol complex. They broke into the building and draped a Trump flag over the Capitol balcony, disrupted the process of the vote certification and forcing members of Congress, journalists and other officials to take cover or flee the building. Shots could be heard at one point. Pence was whisked to a secure location, as were other lawmakers.

Trump monitored the scene as it unfolded on television, according to administration officials and people close to the White House. He holed up in the Oval Office, speaking with Mark Meadows, the White House chief of staff, who was said to have been rattled by the day, and Pat Cipollone, the White House counsel.

Donald Trump Jr. posted a tweet urging supporters to stop the violence. Ivanka Trump, a White House adviser, denounced the violence and corrected an initial tweet in which her reference to “patriots” made her intention unclear. There was silence from the first lady, Melania Trump, and Donald Trump’s son Eric tweeted about how many people sang to him for his birthday at the rally.

Two of the president’s former chiefs of staff criticized the mob. His former counselor, Kellyanne Conway, said on ABC News that the mob was made up of “extremists.” His former communications director, Alyssa Farah, urged him publicly to say something.

But the president resisted repeated requests from advisers, some made directly to him, others to Meadows and other aides.

Trump initially rebuffed requests to mobilize the National Guard, according to a person with knowledge of the events. It required intervention from Cipollone, among other officials, according to the person. About 1,750 National Guard troops from the District of Columbia and Virginia were to deploy Wednesday night, a National Guard spokesman said.

As allies of the president began to go public with their disgust about what was taking place at the Capitol and urged him to speak out, White House aides finally coaxed Trump into a tweet in which he did not condemn the violence.

Then they convinced him he needed to say something in a video statement, which Trump opened with another declaration that the election was “stolen” from him and his supporters, before he said “go home,” ending with words to the supporters: “I love you.” Facebook removed that video, and Twitter later did as well.

Several Democrats, meanwhile, called for Trump’s impeachment. Others — including some Trump administration officials — privately speculated about whether the 25th Amendment would be invoked to remove him from office with just two weeks left in his term.