Just assume that if you are mentally healthy you will not kill anyone, or perhaps anything. If you are mentally ill, there is a possibility that you will kill someone or something. For the moment forget about self-defense killing. The nation is faced with regulating guns and/or fixing our mental health. As a society do we have a mental health problem? If a citizen never killed another citizen would we still have a problem with mental health. What is mental health? One thing for certain, is that when someone kills another person, the killer is likely to be mentally unhealthy. I think we can all agree on that proposition.
Now for the cure, or at least identifying the mentally unhealthy person likely to kill another person. For example, the following are three citizens of concern: Peter screams out, “Drop dead!” Murray hollers, “I could kill you!” Martha shouts, “I wish you were dead. I mean it!”. Peter owns a Ruger 22 rifle. Murray buys a Glock pistol. Martha purchases some rat poison. History has it that Peter was in child therapy when he was 8 years old for drowning a guinea pig in the toilet. Murray was discharged from the Army for sexual harassment of female officers. Martha has had a diagnosis of Bi-Polar disorder since she was 19 years of age, and several suicide attempts.
Peter, Murray and Martha were all passengers on the Orient Express. Who did it?