If there was a struggle between the two, Zimmerman was acting in self defense and Martin wasn’t?
Since they both cannot be acting in self defense, I’d be interested in how you determined that Zimmerman is the wronged party?
Both of them have the same rights. If Martin had killed Zimmerman then he would also go free if he claimed Zimmerman attacked him and nobody could prove he didn’t. If Martin planned to stand his ground against the neighborhood watch, maybe he should have been armed too.