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YouTube algorithm radicalized Christchurch shooter leading to mosque attack

In March 2019, a terrorist killed 51 worshippers in two New Zealand mosques. A New Zealand government report found that YouTube's recommendation algorithm was a significant source of radicalization for the shooter, who regularly watched extremist content. YouTube has since taken steps to remove hate speech content but researchers say the underlying business model and opaque algorithms still enable radicalization.

Date it happened
2019-03-01
Organisation involved
YouTube (Google)
Product, system or model
YouTube recommendation algorithm
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