Wow. I never knew about this. I was only 9 when it happened though. Pretty sickening that people can think that about suicide.
The only other video I've ever seen like this was called "Failure to search". It shows a suspect in custody with a detective preparing to question him. The detective sits down at a desk, facing away from the suspect. The suspect pulls a gun from under his belt, cocks the slide, puts the barrel to his and pulls the trigger. Right after, the detective turns around and throws down his pencil. It's pretty disturbing.
I have not seen any other videos that disturbing and I have no wish to. The video of Dwyer probably ranks second to the one I described, IMO.