Martin was within his right under the Stand Your Ground law to use whatever force necessary to defend himself from Zimmerman. I think most reasonable people would fear for their life and instinctively defend it after being followed by a strange man, chased, then approached by this man brandishing a loaded gun.
Actually no, he was not. Florida’s law and the Stand Your Ground Law of the other States which have them - mostly Southern and Mountain States - do not give Martin the right to confront and fight Zimmerman because Martin was not a resident employee or watch captain of that gated community. He was an intruder.
Don’t take my word for it. Look the law up and read about similar laws on the Internet. Had Treyvon stopped, and surrendered to Zimmerman, and the Police arrived, he, not Zimmerman, would have been arrested.
You can read about such laws here:
en.wikipedia.org/wiki/Stand-your-ground_law and the more basic article,
en.wikipedia.org/wiki/Castle_doctrine , and make your own opinion about them.
My own State (one of the quasi-Southern so-called “Border States”) has both a “Castle” and a “Stand Your Ground” law. "Under those laws, some years ago, in my city, a shop owner who was robbed in his store, took his gun, chased the robber out of the store, down the street, a block away, he shot the robber from behind, killed him, took back his money and went back to his store. The incident made the news - “big time” - but the shop owner was neither arrested or prosecuted. Had that event occurred in New York, that shop owner would have gone to jail for a very long time.
The question is, do such State laws violate Federal anti-discriminatory and/or civil rights laws, regardless of what the National Rifle Association and its advocates might say?