Irony is watching people try to apply law to lawless situations.  
If your friendly neighborhood coke dealer who is also your friend (of sorts) shows up late at night unexpected and starts fighting with you to the point you kick him out. Does that equate to SYG?

 If he goes to his car to grab his gun and comes back up to you talking smack and you shoot him because you're pretty sure he's going to shoot you does that follow a train of logic? 

If his cousin who WAS at the scene disappears all a sudden and they can't find any of his gun money or drugs does that make the cousin an accessory in his death somehow? 

Please give me the logic in this situation, because I'm not seeing how you can apply the law is on anyone's side when dealing with criminal activity. No matter what the situation for the shooting.  The drugs & felon in possession has him screwed.  Yay he lost one charge just to get screwed on all the others - yup no win situation. Meanwhile dead bodies pile up kids grow no dads