Facebook said it removed 1.5 million videos from its site within the first 24 hours after a shooter livestreamed his attack on two New Zealand mosques, killing 50 people.
In a series of tweets, Facebook’s Mia Garlick said a total of 1.2 million videos were blocked at the point of upload. Videos that included “praise or support” from the attack were also removed, she said, using a mix of automated technologies — like audio detection — and human content moderators.
Facebook did not say why the 300,000 videos were not caught at upload, representing a 20 percent failure rate.
The cherry-picked “vanity” statistics only account for the total number of uploaded videos that Facebook knows about. TechCrunch found several videos posted to Facebook more than 12 hours after the attack. Some are…