It’s unclear whether Trump’s administration made the video or if he harvested it from another account.

Trump joins a chorus of conservative media voices that have tried to paint Omar saying “some people did something” during that speech as being flippant about Sept. 11. In reality, Omar was speaking about why the Council on American-Islamic Relations (CAIR) ramped up its efforts to combat Islamophobia in the wake of the attacks.

“CAIR was founded after 9/11 because they recognized that some people did something, and that all of us were starting to lose access to our civil liberties,” Omar, a freshman lawmaker who is one of the first Muslim women elected to Congress, said during a speech to CAIR members.

The video Trump posted includes footage of the planes crashing into the towers despite broadcast networks moving away from showing that specific imagery in recent years. Research has shown that just watching footage of the Sept. 11 attacks can be enough to trigger clinically diagnosable stress responses in people, even those who were nowhere near the attacks when they happened.

Several high-profile lawmakers called out Trump’s actions. Fellow freshman Rep. Alexandria Ocasio-Cortez (D-N.Y.) argued that Trump was putting Omar’s life in danger.