I saw the video; it came with my local Sunday paper. Figured it was someone with an agenda, but surprised because it looks like the ones I have seen from the History Channel. My take on it was a reminder since we Americans have a short-term memory.
I am not sure how much that video played into the event listed in the article. Probably as much as heavy metal did for the churches saying music creates devil worshippers and serial killers.
If that video did contribute, I wouldn't be surprised since everyone claims the violence in video games and on TV has contributed to the demoralizing of our social systems and overpopulation of prison systems. I've seen more offensive and blatant politically motivated stuff on the 6 PM news and cable news outlets than I saw in the video.
If that video played backwards has some ritualistic killing message then I suggest everyone distance themselves from since I am a time bomb waiting to go off.
-dK