I might point out here that Zimmerman is a dark-haired, brown-eyed, dark-skinned, mulatto Hispanic (and we are again using the picture of 12-year-old Trayvon). Nevertheless, do we have a witness here to attest to our hypothetical Travis Martin's calling our hypothetical George Freeman a "creepy-ass n****r?" Assuming yes, then he would have achieved national/internet notoriety as "Awesome Neighborhood Watch Guy" who sure gave that racist gay-basher what was coming to him, and would get invited on to Good Morning America to discuss his heroics, while t-shirts bearing his likeness and a low-budget ripped-from-the-headlines movie get made on his behalf. This only more so if it subsequently came out that our hypothetical Travis did drugs, bought and sold illegal guns, and was circumstantially linked to several burglaries in our hypothetical Freeman's neighborhood. Only some sadsacks at Stormfront would think otherwise.
Zimmerman identifies as white, he didn't mark Hispanic on some forms that were evidence in the case. Besides, being Hispanic was not justification for what he did. There is absolutely no way that a black man would get away with murdering a 17 year old white boy and telling a ridiculous, unbelievable story as his defense. Never. would. have. happened.