Harrowing viral video of a 12-year-old girl hanging herself has police helpless to remove it

A 12-year-old girl live-streamed her own suicide on Facebook, and now police say they are helpless to prevent the video from proliferating online. Katelyn Nicole Davis, of Cedartown Ga., hanged herself in her front yard on Dec. 30. In the video, she says she was sexually abused by a family member. In a previous video purported…