Ms. Ocasio-Cortez often draws intense, sometimes vitriolic criticism from those on the right, and she has been a target of derision and attacks by some prominent Republican men in particular, including some of her congressional colleagues.
She has not shied away from confrontation.
After Ted Yoho, a Republican congressman from Florida at the time, reportedly used sexist language and expletives to confront her, she received an outpouring of support, including from some Republicans, as she jabbed back on Twitter. Mr. Yoho later apologized on the House floor, though he disputed using some of the language that had been attributed to him.
Just last week, Senator Ted Cruz, Republican of Texas, suggested on Twitter that he was prepared to work across party lines with the congresswoman on the issue of the online brokerage app Robinhood’s imposing trading limits amid the GameStop frenzy.
Ms. Ocasio-Cortez’s response to Mr. Cruz, who had embraced Mr. Trump’s baseless and false claims of election fraud, made clear that the violent rampage at the Capitol by supporters of Mr. Trump still felt raw.
“I am happy to work with Republicans on this issue where there’s common ground, but you almost had me murdered 3 weeks ago so you can sit this one out,” she replied to Mr. Cruz on Twitter. “Happy to work w/ almost any other G.O.P. that aren’t trying to get me killed.”
Toward the end of her Instagram Live appearance, she lashed out at Mr. Cruz and Senator Josh Hawley, Republican of Missouri, who had baselessly challenged Mr. Biden’s victories in Arizona and Pennsylvania.
“We knew that violence was expected,” she said. “We knew that that violence was predicated on someone telling the lie, the big lie, about our elections.”
Late Monday night, Ms. Ocasio-Cortez sought to drive home her point in messages posted on Twitter.
“My story isn’t the only story, nor is it the central story of what happened on Jan 6th,” she wrote in one. “It is just one story of many of those whose lives were endangered at the Capitol by the lies, threats, and violence fanned by the cowardice of people who chose personal gain above democracy.”