Maybe Trooper Groubert thought the dude driving turned in to Lassie or a Black Lab..., a morphling or some such thing, Men in Black might be real..... and then it would be expected for a State Trooper to shoot the dog while addressing a seat belt issue... only way I can make sense of it...
All jokes aside, sad day for both of them..
Failure to grovel
Failure to beg
Failure to properly recognize a superior
Exhibition of compliance
Disregard of oppression
Evasion of aim
The list goes on, he's lucky he got off so easily.