Buffalo might never have happened if online hate had been tackled after Christchurch | Imran Ahmed

Social media giants Meta, Twitter and Google have done little to fight radicalisation, violating their own rules

Americans are facing another tragedy - this time in Buffalo - as 11 Black and two white victims were shot in a racially motivated hate crime" suspected to have been perpetrated by a young man who spent much of his life online, where he appears to have been radicalised. He used the same digital playbook as the Christchurch terrorist: livestream footage of his attack and a manifesto" that quoted the same great replacement" and other white supremacist theories. He mentions the Christchurch terrorist by name in his manifesto.

In our most recent research report looking at anti-Muslim hate, we found that the big social media companies were collectively failing to act on 89% of posts that advocated the great replacement theory - despite pledges made in the wake of the Christchurch terrorist attack and subsequent, ideologically driven violent extremism attacks at the Tree of Life Synagogue in Pittsburgh; in Halle, Germany; and in El Paso. These are not lone wolf" attacks. The individuals are connected through online communities on social media, where they share ideas, tactics and content.

Imran Ahmed is chief executive of the Center for Countering Digital Hate

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