The fact that Zimmerman was following this kid around with a truck calling 911 on him. Pro-Z's all seem to think this night began with a broken nose, and yet, so much happened before.To the best of my recollection, that is precisely what was claimed and, presumably, what the jury believed. What is your evidence to the contrary?
As for the jury, I don't know what they believed. They likely acquitted based upon lack of concrete evidence of guilt, rather than proof of innocence.