Zimmerman, from what I gather, did nothing illegal. But I suspect that if Zimmerman were killed instead, Martin should be able to claim self-defence, just like Zimmerman. It is creepy to be followed for no reason.
Excuse me, but killing someone for following you is not self defense, it is fear, or anger(in this case I would say anger),which motivates the attacker. If Trayvon attacked Zimmerman(and all evidence points to the fact he did), and the attack led to Zimmerman's death. TM would not be justified self defense. Only if Zimmerman physically attacked TM first would TM be justified.
He was on the phone to his girl, why didn't he call the cops if he was so scared of Zimmerman. I don't think TM was scared, I think he was guilty of the black male anger BS that makes many of them attack people for perceived slights and I blame the so called black leadership for nurturing this attitude among poor blacks.