There's also the common sense fact that if Zimmerman had intended to kill Martin in cold blood, calling the police just prior to the murder would have been illogical, as would allowing himself to get close enough to Martin to allow Martin to defend himself and reach for Zimmerman's gun. According to Zimmerman, Martin did indeed go for Zimmerman's gun, which is what finally forced Zimmerman to shoot Martin.
No one is arguing that he originally intended to kill Martin that night. You're attempting to stretch that logic in to saying that it would then also be illogical to let Martin get close to him though, and that is incorrect. Zimmerman had no reason to be afraid of Mr Martin up until they confronted each other, at which point they were both already within close range of each other. It is confirmed by Dee Dee that they exchanged words. After that there is no information on how the fight started, all we know is that after the fight started Zimmerman ended up on the floor on his back with Martin on top of him. At some point, Zimmerman pulled his gun and shot Martin several times.
The eyewitness Jonathon Good testified “It seemed like a tussle,” adding that at first he thought he was witnessing a dog attack. He then said that he saw “downward movement,” but couldn’t confirm that he saw punches being thrown. He added that the person on top was “straddling” the person on bottom. Additionally, this photo of Zimmerman's face after the altercation does not reflect a man who's face has been pummeled. He has no bruises at all, yet his nose is broken? Additionally, this photo here shows two lacerations on the back of his head. Did Martin smash his head into the ground repeatedly? Sure doesn't look like it. It looks like he was tackled and got injured during the fall.
So let me reiterate:
1. Martin is walking to a friends house through the rain wearing his hoody after having went to a convenience store to get skittles.
2. Zimmerman sees Martin walking, and follows him because he believes he is suspicious.
3. Martin runs away from someone we can only assume he believes is suspicious as well.
4. Zimmerman leaves his truck to follow Martin, after having reportedly lost him, he does to check the street address on the opposite side of the street?
5. Martin returns to confront his follower.
6. Words are exchanged, and a fight starts.
7. During the fight, Martin tackles Zimmerman, Zimmerman receives several injuries.
8. The eye witness enters at this point and confirms Martin is on top of Zimmerman, but cannot see much more than that.
9. Zimmerman shoots Martin several times, Martin dies.
So now there are some holes in Zimmerman's claims. The eye witness could hardly see what was going on, but was able to confirm that Martin was on top of Zimmerman. No one knows what words were exchanged before the fight, or who threw the first punch. Lack of injuries on Martin does not mean he started the fight, just that he wasn't hit. It is incredibly important who started the fight, and as Zimmerman is the instigator of the entire situation, I am more prone to believe that he instigated things along further.
However bad you might feel for Martin and his family, that's not how a fair justice system works.
I don't believe I ever said the justice system should convict him. No one can confirm what really happened there, so it would be wrong to convict him, but as I said originally, karma will see it's way in the end. If Zimmerman was really justified then that statement wouldn't mean anything. It is definitely his fault that Martin is dead though. That much is clear, he could have walked away with a few scrapes and bruises, and reported Martin to the police for assault, instead, he chose to shoot him, and accidentally killed him.