Good luck with any castle doctrine, stand you grand law, make my day law, etc etc, should you ever gun down a 9 year old. Hint: Things will not go well for you.
Judging from the contents of the article this isn’t the run of the mill kid. This is one which exhibits extremely dangerous behavior up to and including remorseless violence. If he or any of his kind threaten me or my family I will defend myself and my loved ones. Period.