Commentary: Law enforcement by passerby sets a horrible precedent

After reading various accounts in the newspaper, I am obviously very concerned by the shooting death of an unarmed criminal by a passerby.Guns aren’t given to citizens so they can enforce the law but for personal defense. This “passerby” misused his gun as a tool for enforcement. He had neither the training nor the authorization to do so and must be held accountable.Failure to hold a gun owner accountable for his use of a gun as a law enforcement tool will do more to undermine