OK...let's play the "what if?" game.
If the bullet they used to kill the dog had accidentally killed a child, how would you feel?
If they got so ballsy about being able to get away with killing defenseless animals without anyone stopping them and decided to start killing defenseless children, how would you feel?
If it were your dog or child they killed, how would you feel?
If they didn't kill the dog, but instead decided to go into the house and kill his whole family, how would you feel?
Do you get my point? We can "what if" all day long. The bottom line is that they killed the man's pet, he had them in his sights and could have killed them and didn't, he chased them down till the police got and he still didn't kill or hurt anyone and I cannot believe anyone is actually thinking that anything this man did is wrong.
And we wonder why the world is so screwed up???