As the six-month anniversary of the Christchurch mosque massacres approaches, hate content researcher Eric Feinberg says he is still finding copies of the alleged gunman's clip on Facebook and Facebook-owned Instagram.
The New York-based Feinberg gave the Google-owned YouTube a clean bill of health when contacted by the Herald yesterday.
Over the months since the shootings, Feinberg has forwarded the Herald evidence of the gunman's clip on hundreds of Facebook and Instagram pages and, at times, on YouTube.
Copies have been concentrated on Arabic sites. Uploaders have often edited the video - or even disguised it within gaming footage - in efforts to defeat Facebook's filters.
Facebook has said its efforts to beef up its human and AI filters are a work in progress.