Personally ... I would not lose one second's sleep over these miscreants' demise ... animal abuse is one of the symptoms of a "pattern of behavior" that goes far beyond the specific act of shooting someone's dog/cat/horse/... whatever. These individuals represent some of the lowest scum extant in our society.While I'm pretty pissed about what those degenerates did, they in no way deserve to be shot. Marcus clearly did the right thing in his restraint. I hope that those of you that carry/own guns do not really think that shooting someone over a dog is appropriate.
BUT: as satisfying as it might be to blow these assholes away, it's not worth taking yourself out in order to put them down. Luttrell did the right thing in vectoring the local LEO's into the situation -- in fact, he may have even been pushing the envelope in some jurisdictions doing as much as he did -- it's probably a good thing it happened in Texas.
Too bad the creeps didn't try to "attack him" ...