Zimmerman "pursued" Trayvon. That is a fact that cannot be disputed. He did so even after being told by the dispatcher that it was not needed. He even said...they always get away.
Ok, so now we have Zimmerman pursing Trayvon, who is lawfully in a place and is concerned that someone is following him as he stated to his girlfriend on the phone.
Does the "stand your ground" law now apply to Trayvon? It can't be both ways. You say just because he followed him a short ways, doesn't mean he deserved to be beaten to death. Well of course not, but if he pursued Trayvon, confronted him and became aggressive and he got beaten to death because Trayvon was in fear of his life then Trayvon was simply defending himself.
And guess what? Trayvon would be in jail, awaiting his day in court to apply this defense..."stand your ground."
A defense to prosecution means exactly that...a defense to PROSECUTION....not arrest. A defense to prosecution is to be presented after charges are filed, not in lieu of.