2. Actually, since Zimmerman is claiming self defense
the burden of proof shifts. In what's called an affirmative defense, the person charged with the offense admits doing it, but claims legal justification to legally exonerate him. In that case the burden of proof shifts from the State to the person claiming the affirmative defense. I'm told that in Florida the law requires a lesser burden of proof from the Defendant, i.e. simply a 'preponderance of the evidence', i.e. 51% likely. Fla attorneys please feel free to correct me.