What would they charge him with, excessive jumpiness? Desecration of a corpse?
How about murder.
Shooting a corpse is probably a crime... somewhere.
Actually “shooting dead” is the proper phrase in this case since he fired his final shots into him after he was likely dead or not far from it laying on the ground bleeding to death.
If he was jumpy perhaps it is due to his tour of duty in Afghanistan or somewhere. From what I heard about this deputy was that he just return recently from the Middle East prior to the shooting, so who knows.