TikTok has becomes the leading social media platform for pro-Hamas content, according to a new report that’s reigniting calls in Washington to ban the Chinese-owned app.

Researchers at Cybersecurity for Democracy, a joint project of New York University and Northeastern University, found that for every pro-Israel post on TikTok in September, there were roughly 17 promoting Hamas propaganda. The study analyzed hundreds of thousands of videos posted in the United States and concluded that the platform’s algorithm continues to amplify one side of the conflict far more than the other.

The imbalance mirrors what researchers first documented in 2023, when Hamas’s October 7 massacre triggered an online information war that quickly spilled into American politics. Two years later, TikTok remains the most influential arena for shaping young Americans’ views of the war in Gaza—and it isn’t a fair fight.