'A Game of Whack-a-Mole.' Why Facebook and Others Are Struggling to Delete Footage of the New Zealand Shooting

TIME - Tech 

In an apparent effort to ensure their heinous actions would "go viral," a shooter who murdered at least 49 people in attacks on two mosques in Christchurch, New Zealand, on Friday live-streamed footage of the assault online, leaving Facebook, YouTube and other social media companies scrambling to block and delete the footage even as other copies continued to spread like a virus. The original Facebook Live broadcast was eventually taken down, but not before its 17-minute runtime had been viewed, replayed and downloaded by users. Copies of that footage quickly proliferated to other platforms, like YouTube, Twitter, Instagram and Reddit, and back to Facebook itself. Even as the platforms worked to take some copies down, other versions were re-uploaded elsewhere. The episode underscored social media companies' Sisyphean struggle to police violent content posted on their platforms.