But the punk-a$$ affluent trash that shot his windows with paintballs and BBs share the guilt, morally, for making driving this home owner to his feelings of outrage and anger at "pranksters."
In no way does this mitigate his guilt for a "bad shoot." But the dead kid's "friends" who shot his house and broke windows numerous times do not have clean hands in his death.
And I go back and repeat my guess that this was not the first ring and run of the night, for the homeowner to have gotten to his shooting position while the kid was still in range.
If you want to drive a man to a homicidal rage, I suggest you do the following: shoot his windows out with BBs and paintballs, and then sneer and snicker as he fills out useless police reports. Then sneak up after midnight and "ring and run." Wait for the lights to go back out, and do it again, maybe two more times.
Don't be amazed if the homeowner comes out shooting.