Arnie has just beaten off a murderous attack by Bob. Plot over, Bob goes to jail, roll credits, right? Wrong. Maybe Arnie was bigger, or stronger, or could conceivably have run away. Either way, someone in a position of authority feels that Arnie was in the wrong inflicting whatever damage he did to Bob. Bob, on the other hand, is a poor victim. Cue drama. As with everything else law-related, expect the writers to interpret self-defence laws creatively. Examples of Crime of Self Defense include: