Re: The reports so far with some editorial....
"premeditated" - you keep using this word. I do not think it means what you think it means.
I know exactly what "premeditated" means - "contemplated beforehand" (from Latin: etymology is easily looked up online). Your argument is really about mens rea ("guilty mind" - or not) which essentially boils down to "intent".
Contemplating the act of shooting someone and then proceeding to do so with fatal results is not necessarily a crime, it depends on the circumstances and the intent of the person holding the gun. In the case of a volatile confrontation with a similarly armed assailant you can probably shoot him with impunity, but if he is simply stealing your car then pulling the trigger sends you down for life.