All cops are assholes who would cover up their own buddies doing anything.
In fact, had you been standing there, you would have run right over and pushed the cop off of him because you are not a bad citizen. It would have been immediately obvious to you that the man was dying. You would have been first one to do the right thing. I can see it now. The man with the handle “scaredy” saving a man’s life.
I think you should join the police force and clean that organization up.