Wikipedia's Anti-Israel Bias Persists Despite Editor Bans, New Report Finds

A new study by the Anti-Defamation League's Center for Technology and Society reveals that significant biases against Israel, Hamas, and the October 7th events remain on Wikipedia, even after editors involved in a coordinated disinformation campaign were banned. The report, published Thursday, indicates that 19 active accounts continue to shape content on these sensitive topics, employing subtler methods like reverting other editors' changes and gradually altering articles to avoid detection.

While overt coordinated activity has decreased by approximately 95% following congressional and federal scrutiny, a new group of editors has allegedly taken over the biased editing. The ADL's research highlights that work by banned editors has largely gone unexamined and uncorrected. These persistent distortions on widely viewed pages can influence AI systems, large language models, and search engine results, impacting how millions access information.

Jonathan Greenblatt, CEO of the ADL, stated that banning individual editors is insufficient, as key pages still bear the marks of a systematic disinformation campaign that Wikipedia itself has acknowledged but not rectified. He urged the online encyclopedia to correct its record, emphasizing its neutrality claims.

The report provides specific examples of biased editing, including the "Hamas" entry, where information on antisemitism and human rights violations was moved to a less visible page. The "Gaza War" entry had extensive details about forensic evidence from October 7th, including sexual violence and war crimes, removed and replaced with a single line stating that terrorists were "reportedly" involved. The "Zionism" entry presents controversial claims as facts, such as defining it as a movement that achieved its goals through "colonization" and that Zionists sought a state with "as few Palestinian Arabs as possible."

Further examples include the framing of sexual violence on October 7th as occurring only "according to reports," despite multiple confirming reports, and continued biased editing on the page concerning the Bibas family, even after their deaths in captivity were confirmed by Israeli forensic authorities. The ADL recommends measures such as identity verification for editors on controversial topics, content disputes being decided by expertise rather than internal struggles, and the establishment of a dedicated team to combat antisemitic bias. The report also calls for systematic content reviews of heavily edited pages by banned editors and urges search engines and AI developers to disclose when Wikipedia is used as a source.