So basically, you are contending that a person who paraphrases the teachings of almost all self defense and LEO trainers is making a plan to murder someone. The concept that you will need to clearly articulate the reasons for being in fear for ice or serious injury is one that is taught at every CHL class, and every defensive handgun class/lecture I have ever attended. So are we all now murderers in training??
I'd like to see your data for the claims that the kid was shot in the back or after he was downs and no longer a threat. All I've seen are the reports linked here and other forums that pretty much show a tragic, but justifiable shooting.
I've no dog in this hunt as I don't know the guy nor have any history with him, so show me the evidence and I'll listen.