Following someone is not a crime and obliviously his actions are what in the end lead to the death of Martin. It was Martins actions of confronting the guy who was observing him from a distance and the assault he put on Zimmerman that caused his death. If I see someone who I think is about to commit a crime I can observe them as a witness and if during that observation they attack me and I fear for my life and kill them I'm not blame. That's about the dumbest nonsense I've heard lately!
Would you confront and question someone following you in your neighborhood?