French authorities investigate alleged Holocaust denial posts on Elon Musk’s Grok AI - https://www.theguardian.com/technology/2025/nov/20/french-authorities-look-into-holocaust-denial-posts-elon-musk-grok-ai "X chatbot suggested gas chambers at Auschwitz-Birkenau were ‘designed for disinfection’ not mass executions" time to block #grok and #twitter