Just a sad situation. Not sure if Martin wanted to kill Zimmerman but if he had let up and not pounded his head in cement Martin would still be alive today. Zimmerman should have shot him in the leg but I doubt he had time to think about where he was going to shoot since he probably felt Martin was going for his gun at the point he shot.
When someone is trying to kill you, you cannot give them a head start to try and be fair.
Is that what they teach you when you take your concealed carry course???