if it can be proven that Zimmerman started the fight, an unlawful activity, then Zimmerman could not use "Stand Your Ground" as justification for shooting Martin.

A person who is not engaged in an unlawful activity and who is attacked in any other place where he or she has a right to be has no duty to retreat and has the right to stand his or her ground and meet force with force, including deadly force if he or she reasonably believes it is necessary to do so to prevent death or great bodily harm to himself.