Nonsense. If this was so I could beat you down in the street for walking behind me or for telling me my cigar smoke was disgusting. But I can't because I would be guilty of assault. In fact Florida law permits deadly force even to an aggressor who feels his life is seriously in danger after he gets beat down.
I don't know who the aggressor was but the eyewitness I listened to was pretty clear about who was getting his head beat on the sidewalk and who was doing the beating. This, of course, is not evidence of who got physical first but if the prosecutor can not prove that it was Zimmerman then this entire exercise is futile, political and a miscarriage of justice.
I'll wait to see her evidence proving Zimmerman was the physical aggressor beyond a reasonable doubt but if she doesn't have it then she should never have gone forward.
Also, Zimmermans neighbor, who didnt want to be shown on camera, has come forward to say that George Zimmermans face was indeed swollen the next day and he was wearing bandages. Also, he said he talks to Zimmerman every day and said that on the 911 tape of the person screaming for help, it was George Zimmerman.