Some Stop AI members have been arrested for blocking doors to OpenAI offices as protest.[3][4] In November of 2025, the San Francisco Public Defender's Office delivered a subpoena to Sam Altman, as part of an ongoing trial of Stop AI members, while Altman appeared on stage a public event.
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According to a Stop AI leader, in late 2025, Stop AI co-founder Sam Kirchner punched him due to disagreement about the organization[4] and suddenly disappeared.[6] OpenAI and local police feared potentially violent intentions and locked down San Francisco offices.[7] Kirchner was expelled from Stop AI.[4]
