@BillRM,
So, Zimmerman got punched in the nose. And his head was scraped on the sidewalk. You don't know exactly what sparked the confrontation, or who provoked it.
If Zimmerman feared damage from his alleged head pounding, why did he refuse to be taken to a hospital the night of the shooting?
He consulted his own doctor after the shooting only to get a letter saying he could return to work--not because his injuries were serious, or because he was concerned about them. And he ignored his doctor's suggestions for follow-up care
Did he even need to have his nose re-set after the incident? Did he receive a CAT scan to check for brain injury/trauma? Did he receive any treatment for a concussion?
Other than a little blood and some scrapes, where is the evidence of these life-threatening injuries? Zimmerman showed no evidence of having "been beaten". He was just fine the next day, just a few band-aids on the back of his head.
Getting punched in the nose and knocked down is not justification to use deadly force against an unarmed person.
And you continue to ignore the fact that Zimmerman did not say he shot Martin because of an alleged head-pounding. Or are you also confused by the many, often conflicting, versions that Zimmerman gave to the police?
This whole incident started with a kid returning home after a trip to a store--and that kid wasn't bothering anyone, and was nowhere near Zimmerman. And, if Zimmerman had left the kid alone, nothing would have happened, and Martin would still be alive.