Fully jacked bullets over penetrate and they ricochet - they are the most dangerous type of ammunition legally sold in the U.S. for these reasons. Hollow point ammunition is made for self-defense, that is the purpose, not to bounce around and fly through a nearby baby carriage... To defend your life and contain and constrain the projectile to that purpose.
There was nothing cold about the blood in Mr. Fish at the time of the shooting, he feared for his life, he was under attack by uncontrolled dogs, which he did not shoot, and an enraged top predator. Humans are at the top of that list. We are the dangerous animal.
The attacker had a screwdriver in his back pocket, he was not unarmed. He had no time to consider options, to back up and brandish his weapon and make a halt command - it was kill or be killed: that is what went through his mind, no cold blooded murder.
Harold Fish flagged down a passing motorist to get medical assistance on the scene. He is a model citizen. The fact that this man is in jail is repugnant to the very foundation of civilization, liberty and freedom. You do not have a right to beat another human being because he or she fired a warning shot at your aggressive dogs.