At least in central Ohio, . . . a head shot is perhaps SOP for LEO's when there is a situation requiring it.
Example: dude came in a nightclub with Beretta 9mm, muscled his way onto the stage, shot and killed the drummer and lead guitarist. Was trying to do some kind of hostage thing and if I remember correctly, . . . had pumped a few other rounds out for effect.
LEO arrived, took out his 870 with 00 buck, . . . shot bg in the face at something like 15 feet. Of course, . . . end of situation. Last I heard, the LEO was given a clean bill over it, . . . and I take that as tacit approval to use a head shot (at least in Columbus, Ohio) should the situation warrant it.
Just don't carry your CCW near the mayor, . . . he is an unapologetic lunatic when someone mentions firearms to him. He makes Sarah Brady look like an NRA vice president.
May God bless,
Dwight