I don’t see how “Stand your ground” applies here, unless someone is arguing that the law influenced Zimmerman’s thought processes that night. If his story is correct, he pulled his gun after being assaulted, and his self-defense rights are sufficient alone.
even if the instigator, you do not lose your right to self defense when a person is bashing your skull against the edge of a concrete sidewalk.
Also keep in mind the parents and the mob want an oj style civil trial however, stand your ground provides imunity.
(btw the police admission that they have no witnesses and no way to know what happened pretty much leaves it in the self protection list. iow no jackpot civil suit.)