Adding to this, the documentaries also include interviews with people saying “I thought they should look into this more and they didn’t”, or “Our department was really trying to solve this, and it just took awhile.” The implication that someone out there cares. It is less isolating than horror movies generally are, which tend to show how things went wrong usually because no one cared or no one knew anything was up. I guess the documentary is the natural sequel story - we couldn’t stop the bad thing from happening, maybe multiple times, but we are at least aware of it and trying to figure it out.