Majority of antisemitic social-media posts reported by Jewish communities remain online, study finds

More than 80% of antisemitic social-media posts reported by Jewish community members across Europe remained online, according to a World Jewish Congress study examining the effectiveness of platform reporting mechanisms.

Researchers analyzed 754 posts reported between February 2025 and April 2026, finding that 613 posts - 81.2% of the total - remained accessible when checked in May. The examination was conducted by the WJC's Technology and Human Rights Institute, which works with Jewish communities to identify and report online antisemitism and launched its Hate Online: Preparedness and Empowerment reporting tool in 2025.

"Jewish individuals and institutions are the target of hate-fueled violence at a higher rate than any other religious or ethnic group. These acts are then glorified and promoted across social media platforms," Said Yfat Barak-Cheney, executive director of TecHRI, adding that "it is up to companies to enforce their policies and remove content when it violates existing standards designed to protect vulnerable communities."

The research found that formal reporting had minimal impact on removal rates. Platforms removed 19.5% of flagged posts compared with 18.2% of unreported content. TikTok stood apart, removing 64% of reviewed content, while other major platforms removed less than 15%. Facebook had the highest reporting rate at 76% of posts flagged but one of the lowest removal rates at 13.9%.

Israel-related antisemitism showed the lowest removal rate at 5.2%, with none of the 28 posts comparing Israeli policies to Nazi Germany being removed. The study also examined 232 posts containing direct calls to harm Jews, of which 151 remained online. These included ISIS publications calling for attacks on synagogues and Jewish neighborhoods in the United States and Europe, as well as explicit calls to murder Jewish people.

The WJC called on social-media companies to review their antisemitism policies and publish data on reporting system effectiveness, while urging European regulators to use the Digital Services Act to scrutinize platform handling of antisemitic content.