On you tube you can watch the sequence, with the audio recording, and see the still photos. The guy never identifies himself as a police officer, isnt driving a police car. Figures out the guy is armed inside his car, and tells him to put his hands up, but doesnt say he is a police officer. Then he fires multiple shots, the victim never fired. He might of initially meant well, did ask the stranded motorist if he needed help, but he ended up screaming at him and shooting him, because he was armed. The area the motorist was stranded in is a bit sketchy, cant blame the victim for being armed. He never left his vehicle, and never fired. In my opinion it was at least manslaughter.
Murder 2, minimum.