Seven people are known to have perished throughout the insurrection and in its immediate aftermath.
Four were Trump followers; one shot by police as she attempted to smash into Congress; one trampled to death in the crowd, and two undergoing medical emergencies.
Three more were police officers; one died after an altercation with demonstrators, and two more committing suicide in the days and weeks after the riot.
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Glenn Greenwald, a freelance journalist, tweeted in response to Ocasio-Cortez's Sunday announcement: "Claiming that there is "almost 10 dead" from the 1/6 riot is deceitful in the extreme."
"Four people died on 1/6: all Trump supporters."
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"It's possible to connect a couple of the later police suicides to 1/6 if one stretches enough but this need to exaggerate 1/6 speaks for itself."
He continued: "The lesson of 9/11 is - or should have been - that allowing politicians to deceitfully exaggerate domestic threats or exploit the propagandistic term "terrorism" to justify civil liberties assaults is dangerous in the extreme."
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"Clearly, many have forgotten this lesson."
The four Trump followers included Ashli Babbitt, 35, an Air Force veteran from Southern California, shot and killed by a Capitol Police officer as she climbed through a broken window heading to the Speaker's Lobby inside the Capitol.
Rosanne Boyland, 34, of Kennesaw, Georgia, was trampled to death. Benjamin Philips, 50, the founder of a pro-Trump website called Trumparoo, died of a stroke while in Washington DC, while Kevin Greeson, 55, of Athens, Alabama, had a heart attack during the riot.
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The three officers included Brian Sicknick, 42, who attempted to repel the demonstrators, then returned to his division office and collapsed. Investigators think he may have been killed as a result of a reaction to bear spray or mace.
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Jeffrey Smith, 35, was hit on the head with a metal pole and sunk into a deep depression after the protest, and shot himself on the way to work on January 15.
Howard Liebengood, 51, died by suicide on January 9.
Ocasio-Cortez was reacting to a report in Rolling Stone magazine, published on Sunday, that announced that Congressional staff members met regularly with the rioters before the insurrection.
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The two sources for the Rolling Stone piece said seven Republican members of Congress either participated in the work or sent top staffers; Marjorie Taylor Greene, Paul Gosar, Lauren Boebert, Mo Brooks, Madison Cawthorn, Andy Biggs, and Louie Gohmert.
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