Look at it from the other perspective.
You kill my 20 kid, who was only partying next door, because YOU forced your POV?
Keep that in mind.
Keep your 20 year old drunk adult off my porch and you won’t have a problem.
Wrong perspective.
The kid WASN'T partying next door. Uninvited, he snuck INSIDE a neighbors dark house.
Warn your kid about guys like me. We've already planned out, and practiced, just how it's going to end when someone univited sneaks into our house.
There is a price for being stupid, and you just might save your sons life.