"I haven't mentioned it before, but there's a good chance I'd have done the same thing if I lived in a neighborhood where a lot of burglaries had taken place and I was tired of the perpetrators always getting away before the police arrived. Geez, but I must be evil..."
That explains a lot.
You have predetermined that the kid was a 'perpetrator'.... I consider that profiling!
If you left the safety of your car, (after being directed to stay put) with a loaded gun, and killed an UNarmed 17 yr old, who belonged it the area, you would be a murderer.