In general. Like I said I have no idea what went down here, neither does anybody else speculating here.
Htf am I arguiing in favour of the accused, I'm saying a knife can kill a person. If the guy did indeed stab him and he reacted on the spot (not followed him etc) then he would have been within his rights to shoot him but I don't know what happened here, I don't know if the guy had a knife, wether the shooter chased after him after being stabbed etc etc etc
But yeah you are right I just waltzed in here made my mind up and decided the guy must have done the right thing to shoot him and now I'm he's biggest supporter for life
PS Anybody know which prison he's in so I can go and visit my new best fried and give him some moral support?