California security workers at tech giants like Anthropic, Meta and OpenAI plan to strike. This comes at a tense moment for the AI industry.

Artificial intelligence giants are facing a new fear after security officers guarding Bay Area and Silicon Valley offices announced plans to strike, forcing possible closures as violent threats mount.

Anthropic instructed employees not to report to its San Francisco offices on Monday and Tuesday after the AI company was notified that security personnel working at its facilities could go on strike, ...