Wow, where do I begin....
First off, have you seen the injuries Zimmerman sustained? He got them from Trayvon - fact. Prosecution doesn't even dispute that.
Ever think the "recipients" (aka George) hands were flailing back desperately for their life, yet George was so weak and/or powerless he left no bruises on Trayvon? Even the Medical Examiner said there was no injuries aside from minor ones on Trayvon's left hand.. That tells me George was defeated, Trayvon was stronger, more aggressive and over powering.. And do you really think it's inconceivable to have 1 hand pushing a persons face into the ground with the other throwing blows?? I take it you've never been in a fight - good for you. But I also take it you've never had anyone on top of you and realized the power a person on top has.. Ask any MMA fighter. Bet they all say being on the bottom is no place to be.. Better yet, play around and wrestle with a friend - bet you the person on top has a huge advantage..
Scrawny teenager? George was about 20-30 pounds more than Trayvon, and George is shorter than Trayvon, keep in mind Trayvon was an athletic kid, George was overweight & out of shape for his age and height..
You should be ashamed to judge someone without knowing ALL the facts.. Ignorance is bliss. If you actually followed this case, perhaps you could find a point to argue, but it's rather obvious you're simply searching for a cause..