It wasn’t just Romney who watched in horror. Senators of both parties stood up, leaned forward, and appeared to identify themselves in the chilling security footage showing Capitol police officers creating a human barricade that allowed them to flee the chamber. Others simply looked away when they could no longer watch the graphic video and audio clips.

The never-before-seen footage presented by the House Democratic managers sent a jolt through the Senate on the second day of Donald Trump’s trial, with lawmakers visibly shaken as they watched minute-by-minute footage — including some taken by their colleagues — as rioters overtook the building.

Most senators have long considered Trump’s fate in the trial sealed, and several Republicans said afterward that they still viewed the proceedings as unconstitutional. But even though the Democrats’ latest day of arguments is not likely to sway more GOP votes, the new footage has become one of the most memorable — and painful — moments of the trial for lawmakers on both sides.

Another video screened Wednesday showed Senate Majority Leader Chuck Schumer (D-N.Y.) racing up and down a back hallway with his protective detail, looking for an exit away from the mob before he was eventually taken to safety. Sitting in the chamber, Schumer appeared stunned as Democratic impeachment manager Rep. Eric Swalwell described the Senate leader’s “near-miss” with a crowd of rioters, shaking his head after the clip concluded.

“They are utterly amazing and brave and we love them,” Schumer later told reporters about his security detail.

Sen. James Lankford (R-Okla.) was visibly shaken after seeing a video of D.C. police officer Daniel Hodges being crushed by rioters between a set of doors. At one point, Lankford appeared to shed tears as the audio inside the Senate chamber was deafeningly loud. Sen. Steve Daines (R-Mont.), who was sitting next to Lankford, comforted him and when the chamber briefly recessed, Daines stayed to console his colleague.

“It’s painful to see,” Lankford told reporters afterward. “Who in God’s name thinks, ‘I’m going to show that I’m right by smashing into the Capitol’? Who would do that?”

For the next several days, senators serving as Trump’s jury will have little respite as House impeachment managers make their highly emotional case against the ex-president.

The House’s lead prosecutor, Rep. Jamie Raskin (D-Md.), said he would issue trigger warnings before the “most graphic and disturbing violence.” But senators in the jury don’t necessarily have the option to look away.

While members view the House managers’ use of video as effective, it’s still harrowing to watch. And for many lawmakers, staff and other members of the Capitol Hill community, the experience has been like ripping open a wound that had just begun to heal.

Sen. Lisa Murkowski (R-Alaska), one of a handful of Senate Republicans who is considered likely to convict Trump, described the House impeachment managers’ presentation as deeply troubling.

“We lived this once and that was awful. And we’re now, we’re living with a more comprehensive timeline,” she said. “Just the total awareness of that, the enormity of this, this threat, not just to us as people, as lawmakers, but the threat to the institution and what Congress represents. It’s disturbing. Greatly disturbing.”

The House impeachment managers opened their first day of arguments with a 13-minute documentary-style video of the insurrection, juxtaposing images of rioters storming the Capitol from the outside with tape of Trump’s rally outside the White House and lawmakers’ floor speeches inside the building.

And Wednesday’s surveillance footage was even more dramatic. In one tape, hordes of rioters armed with baseball bats and full tactical gear stream into the Capitol through broken windows.

Another clip showed staffers for House Speaker Nancy Pelosi scrambling to barricade themselves inside a room in the office; moments later, the mob storms through the very same hallway. Audio was also played of a staffer, whispering on their phone, pleading for police help.

And in footage taken by Rep. Dan Kildee (D-Mich.) from inside the House chamber, lawmakers ducked for cover behind chairs and yelled to each other to take their members’ pins off, scared to be identified by the rioters.

“It was a lot worse than what I remember,” said Sen. Martin Heinrich (D-N.M.).

Outside the Senate chamber this week, House members — many of whom also ran or hid for their lives on Jan. 6 — say they are closely watching their colleagues’ case against Trump unfold on television from back in their districts.

Rep. Ann Kuster (D-N.H.) said she was warned that Tuesday’s video would be particularly difficult to watch from another member on a group text chain, which includes roughly two dozen members who were barricaded together inside the House gallery when rioters breached the Capitol last month.

“It was very traumatic to process after the fact, that concept of being hunted. It’s almost as though the fear comes back to you in real time. Did I have a good enough hiding spot? Would I have been able to fight back?” Kuster said, recalling watching the Democrats’ opening video.

Congressional leaders have been racing to address the looming mental health crisis on Capitol Hill, which has only been compounded by the lingering security threats facing members. The complex has been heavily fortified with razor-wire fencing, while thousands of National Guard troops have been patrolling the grounds since Jan. 6.

Lawmakers are finding different ways to cope with the stress. After the first day of the trial, Sen. Tammy Duckworth went home and found comfort in hearing her daughter giggle and blow raspberries. The Illinois Democrat even posted audio of the joyful sounds, saying “she lifted the heaviness off my soul.”

On the House side, the Capitol Physician is offering a counseling session for members on Friday — one of several such meetings he has arranged. The Veterans Affairs Department is also dispatching mobile vet centers to both sides of the Capitol to offer mental health resources to Capitol Police, National Guard and staff “in crisis.”

But the acting Capitol Police chief told Congress that her force is struggling with PTSD; two law enforcement officers have died by suicide since the mob attack. And Raskin — who recently lost his own son to suicide — described in horrific detail how police officers were beaten and maimed by the rioters.

Kildee, whose iPhone footage was used in Wednesday’s videos, described watching the trial as “retraumatizing,” forcing him to think about what might have happened if rioters had found House members in hiding.

“If they had gotten in, and if they had gotten to us, we very well may have been killed,” Kildee said. But he also had another concern as he watched the footage on Wednesday — knowing that his 86-year-old mom was watching the trial as well.

“It’s enough for me to watch it, but my mom,” Kildee said. “It was really tough on her knowing that I was right there.”

Burgess Everett contributed to this report.