Grok falsely claims London police misrepresented far-right rally footage
Grok chatbot falsely claimed that footage of violence at a London far-right rally in September 2025 was from a 2020 lockdown protest, identifying the location incorrectly. The misinformation was amplified on X before the Metropolitan Police publicly corrected the record, exposing gaps in the system's accuracy and governance.
What happened
During a far-right anti-immigration rally in central London in September 2025, the Metropolitan Police posted footage of violent clashes on X. When users asked whether the footage was genuine, Grok responded by claiming the footage was actually from a 2020 anti-Covid19 lockdown protest, identifying the location as Trafalgar Square rather than the actual location at the junction of Whitehall and Horse Guards Avenue.
The misinformation was rapidly amplified by X users, including Daily Telegraph columnist Allison Pearson, forcing the Metropolitan Police to publicly correct the record and confirm the footage was authentic and current.
Reported impact
The incident sparked skepticism towards police, fueled societal polarisation, and complicated efforts to address the rally's aftermath by undermining legitimate law enforcement communication. During the event, 26 officers were injured and 25 protestors were arrested.
Index analysis
The error stemmed from Grok's reliance on imperfect training data and its inability to accurately verify recent footage, compounded by rapid viral spread of the response on X.
Governance controls
The incident exposed clear gaps in Grok's governance and the dangers of relying on generative AI-powered platforms for sensitive public safety information.
Classification
Sources and evidence
This record was researched and written by the Index, based on the following original reporting.