Had a similar experience, but it was a video of a guy who got run over by a truck, or in more accurate terms...smushed into its radiator. There was not a lot left that could be recognized as a normal human body, but he was still alive and crying for help.
I'll also never forget that, fucking traumatizing thing. I believe the Nokia phone camera quality which was usual back then made it even worse, because there were missing details you couldn't see, only imagine.