You can hear that it's not Zimmerman's voice. That coupled with the fact that the kid was unarmed, had been followed...whatev.
I guess you are better at voice recognition than I am. I hear a voice screaming in the background, the only reason I even know he is yelling help is because the lady on the phone says he is yelling help. I can't make out if it is Zimmerman's voice or not.
Like I have said before, I am not saying Zimmerman was justified. I'm just saying that its possible. It just seems that everyone made a snap judgement on this case before all the facts came out. From the beginning it was presented as the kid had skittles and tea it was obviously murder. As if skittles and tea prevent anyone from beating the chit out of someone.
The only thing I believe that I know for certain is that this Zimmerman guy is a busy body douchenozzle.
What I imagine happened is busy body douchebag decided he wasn't going to let this kid get away before the cops got there and his attention/stopped him. A fight broke out, and Rambo shot the kid because he was getting his rump kicked. That seems the most likely scenario based on my personal belief that the truth of two sides of a story is somewhere in between. I highly doubt Zimmerman chased him down and shot him. I highly doubt the kid ran away, circled around and attacked him from behind like some kind of jungle cat.
The problem is how do you prove any of that? I don't know, that's the problem that comes up when some kills someone and claims self defense when no one is around to see it or when there are conflicting stories. I'm not comfortable with everyone calling for murder charges just based on what you have seen on the news though.