I don't know what cops call cops over reacting, but this cop is way out of line. Not only is he acting without compassion but he's abusing an elderly man trying to take another elderly man to the hospital in an emergency. Listen to the police chief's defence.
The victim says he should get six months. How about six years? This is the kind of thing that gives cops a bad name - like Pig. In this case, I think that would be a compliment.