Where in hell are the forensics. Was there powder stippling on Martins skin and clothing? If so...it was up close. If not the shot came from a distance. It would be easy to determine if he was shot while fighting Martin.
BINGO
the cops and the prosecutor KNOW from forensics if Martin was shot while on top of Zimmerman, what angle etc - they KNOW if he had bought candy and ice tea as has been stated as his business for being in the neighborhood - they KNOW if there was forensic evidence of a struggle over the gun - they KNOW if either man had drugs or alcohol in their system or on their person
OR NOT
so why the silence??????