PC is insulted by NPC, so PC attacks NPC.
I ask "Attack him with what?" Player says "I shoot him with my blaster." I say "Okay..." and player starts gathering his Initiative pool, "...you shoot him and he falls to the floor, dead." Player says "I didn't want to kill him, just hurt him." I say "Then you shouldn't have shot him."
Maybe I'm just getting too old for that kind of crap; I know it's just a game, but shooting a random drunken bigot in a bar is not worth rolling dice...or my time. Civilized population center, 40+ witnesses to the shooting, case closed, new PC, or retcon the scene?