We had a case a few counties away of a pair of cops wrongfully pulling over a family travelling from Florida -- without cause -- getting everyone, including mother and kids out of the station wagon, holding them at gunpoint, and then when the family pleaded with them to not let their dog out of the car, left the doors wide open, laughing about it.
When the family's pet APBT jumped out of the car, tail wagging, running around, to be petted (yes, it was caught on the video), and went toward one of the cops -- again, tail wagging, in full play mode that any moron could see wasn't a threat -- the b@stard shot the dog dead. Right there in front of the family, kids and all.
I don't know that the police force would have done anything to him except the community -- and statewide outrage was so great that they had to. He ended up having to leave the area. It wasn't safe for him to stay. Last I heard he'd lost his wife and kids as well.