Facebook is complaining that none of the people who watched the mass shooting video flagged it
Facebook explained to journalists that part of the "challenge they face" is that we the people aren't flagging enough content fast enough.
It may sound counter-intuitive at first, but Facebook is not removing the video of Brenton Tarrant’s mosque tour because people hate it and don’t want to watch it, they’re removing it because people love it and actually want to watch it.
If people hated it and didn’t want to watch it they wouldn’t have to do anything to prevent people from watching it because people would avoid it on their own, just as you don’t click on YouTube videos that you don’t want to watch.
The problem is that people really want to watch the video. Facebook reportedly removed 1.5 million copies of it.