The meeting, held on a video call for about 90 minutes and joined by more than 30 people in all, included the actors Sacha Baron Cohen, Debra Messing and Amy Schumer. It was led by Adam Presser, TikTok’s head of operations, and Seth Melnick, its global head of user operations. The executives said they wanted to know more about what the creators were experiencing to improve the app, according to a recording of the meeting obtained by The New York Times.

The celebrities and creators described, sometimes with fiery rhetoric, how TikTok’s tools did not prevent a flood of comments like “Hitler was right” or “I hope you end up like Anne Frank” under videos posted by them and other Jewish users.

“What is happening at TikTok is it is creating the biggest antisemitic movement since the Nazis,” Mr. Cohen, who does not appear to have an official TikTok account, said early in the call. He criticized violent imagery and disinformation on the platform, telling Mr. Presser, “Shame on you,” and claiming that TikTok could “flip a switch” to fix antisemitism on its platform.

[The fact that Osama bin Laden is now being praised on TikTok for his anti-Semitic “Letter to America” suggests the critics are right about the planform. – John]