The bigger question is why did Trayvon attack Zimmerman and beat him so badly? Going for a man's gun always has lethal consequences.
Dude, if someone was beating you up as bad as those injuries indicate, you wouldn't be playing nice nice and wondering why you were being beaten, you would be worried more about surviving...
If someone was attacking me - I'd shoot too. Sometimes this country goes way overboard with political correctness.
Perhaps if Trayvon had just gone home none of this would have happened - instead he decided to attack Zimmerman, that is where the problem started. Someone following you does not cause the need to turn around and attack them.
Therein lies the problem.
There are several 'if only' scenarios here.
If only Zimmerman hadn't gotten out of his car. If only Trayvon hadn't been wearing that hoodie. If only Trayvon had gone home. If only he the confrontation hadn't taken place.
We don't know that Trayvon attacked first. Maybe he did, but we don't know.
I recall his girlfriend, who was on the phone with him at the time, describing him as being scared because someone was following him, and hearing someone say 'what are you doing around here', before the phone went dead.
If that's true, it's not a case of Trayvon approaching Zimmerman, but vice versa. We may never know the truth.
I'll bet that if either party had to do it over again, it would have ended differently.
I think the proof of the injuries could ease the fears of many of the protestors who thought that part of the story was made up after the fact. I also wonder if he might be found guilty of something for following Trayvon in the first place.