The letter was written following widespread reporting in The Intercept and other outlets that detailed how posts on Meta platforms that are sympathetic to Palestinians, or merely depicting the destruction in Gaza, are routinely removed or hidden without explanation.

“The time has come for Meta, among other tech giants, to publicly disclose detailed measures and investments aimed at safeguarding individuals amidst the ongoing genocide, and to be more responsive to experts and civil society.”

Meta’s reply disclosed some censorship: “In the nine days following October 7, we removed or marked as disturbing more than 2,200,000 pieces of content in Hebrew and Arabic for violating our policies.” The company declined, however, to provide a breakdown of deletions by language or market, making it impossible to tell whether that figure reflects discriminatory moderation practices.

A February report by AccessNow said Meta “suspended or restricted the accounts of Palestinian journalists and activists both in and outside of Gaza, and arbitrarily deleted a considerable amount of content, including documentation of atrocities and human rights abuses.”

A third-party audit commissioned by Meta itself previously concluded it had given the short shrift to Palestinian rights during a May 2021 flare-up of violence between Israel and Hamas, the militant group that controls the Gaza Strip.

In its December report, Human Rights Watch noted, “More than two years after committing to publishing data around government requests for taking down content that is not necessarily illegal, Meta has failed to increase transparency in this area.”

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