There really wasn't a good side.
The way I see it a 17 year old boy who went to the store was profiled, a fight ensued and he was gunned down.
Was it self defense? At the time of the shooting it seems to have been.
But if I stalk someone, pick a fight with them, find myself losing the fight, can I then shoot them and claim self defense?
The answer should be no, the problem is there really wasn't enough evidence to convict him because there was no eye witnesses and we can't say for certain who started the fight, who was screaming and whether or not Zimmerman thought he was likely going to incur great bodily harm or death.
So while the verdict is correct, based on the evidence, or lack thereof, nobody "won". Least of all Trayvon Martin.