I have brazenly appropriated the title of this post (and the embedded image) from the July 30 episode of This American Life. Rather than embed an audio here and potentially steal a little of their traffic, I'll instead provide two links so you can listen at their site.
Home, Home Near the Range is a 23-minute longlisten. The content is unsettling.
Fear Thy Neighbor is a 21-minute followup to the above. Equally disturbing.
I'll close the comments here because I don't have time to curate comments on this subject.