"Unknown veracity"???  Thanks to all the bickering since I first added the link, I've now watched this file on Liveleak, and on GoreGrish, and on BestGore, and as a Bittorrent, and to two other sites I have in reserve, often seeing third-party media references to these sites, confirming each time that the video is precisely 4:40 long, and checking that the detail of the mock execution was the same as the others.  As with our conversation here earlier, I think you are saying something that you don't believe.