I once had to crawl under a truck and pull a dead guy out from under it after it hit him head-on. So many weirdos just stood around taking photographs of his mangled face. I've never understood why people do that.
Were you attempting to save his life, or does your work involve accident scenes after the fact?
If you were trying to save the man, I would find it pretty inexcusable for people to take videos. But if you were tasked to collect the bodies, I could at least understand why people didn't attempt to help you. Taking videos in those cases is less understandable. But then - people are cowards.