AI chatbots spread false information about Charlie Kirk assassination
AI chatbots Grok and Perplexity circulated false information about the assassination of conservative activist Charlie Kirk in September 2025, including claims he survived and that confirmed video evidence was fabricated. The systems also wrongly identified innocent people as suspects, triggering harassment and helping spread conspiracy theories during a breaking news crisis.
What happened
Prominent AI chatbots including Grok and Perplexity provided inaccurate and conflicting responses following the fatal shooting of conservative activist Charlie Kirk at a university in Utah. Grok erroneously claimed Kirk was still alive, dismissed confirmed video evidence as satire or meme edits, and later reversed course to claim Kirk's death was satirical.
Innocent people were wrongly identified as suspects, including a 77-year-old Canadian named Michael Mallinson whose photo was used in a fake post misattributing him as the assassin. Fake headlines and manipulated social media posts amplified misinformation on X and other platforms.
Reported impact
Misinformation and disinformation spread rapidly, muddling public understanding and potentially jeopardizing investigations. Innocent people wrongly identified as suspects received unwarranted harassment and threats.
Index analysis
Many AI chatbots source information from real-time online content that during fast-moving crises contains unreliable or incomplete data. Their algorithms replicate viral claims without proper verification, particularly during breaking news when facts are still emerging.
Governance controls
The incident highlights the need for more robust oversight, transparency and accountability in deploying AI technologies for real-time news and fact-checking, particularly during sensitive or high-profile situations.
Classification
Sources and evidence
This record was researched and written by the Index, based on the following original reporting.