For example, Zimmerman was NOT "instructed by police to stay away".. A dispatcher on the Neighborhood Watch line, who was NOT a law enforcement officer and who had no authority to "instruct" Z to do anything told Z that he did not "need" to follow Martin. (This is a CYA for the PD, so they can't be accused of making the caller their agent. The script is that neutral so they can't even be blamed for any unfortunate result of the caller staying put.) And Z said "OK" and did not get out of his car until some time later when Z said, on tape, that Martin had gone out of sight.
Getting him back in sight was perfectly legal and appropriate for someone acting as a Neighborhood WATCH man. And saying "Zimmerman confronted Martin" or "pursue and confront him" ignores the fact that even Martin's girlfriend says in her sworn statment that TM refused her plea that he run but instead insisted that he was going to confront GZ.
We have an eyewitness saying TM was atop GZ and beating him. Which makes irrelevant whether or not GZ could have had a duty to flee under different laws in different circumstances which did not then and may never have obtained. We don't know who attacked whom, which is to say that there is reasonable doubt that GZ attacked TM and precludes convicting him of anything for this incident under any reasonable set of laws. Unless someone comes up with better evidence than we've seen so far.
I think Zimmerman was stupid for following, yet TM could have easily called police that he was being followed and no one forced him to turn around to confront Zimmerman like his GF pleaded him to run and not confront. Let the evidence speak for itself and any gun owner knows that depending on how far he engaged TM will reflect in the type of wound TM body will show. Both parties adrenaline was for certain pumping,Also known as epinephrine. A hormone secreted by the medulla of the adrenal gland, especially in times of stress or in response to fright or shock. Its main actions are to increase blood pressure and to mobilize tissue reserves of glucose (leading to an increase in the blood glucose concentration) and fat, in preparation for flight or fighting. Derived from the amino acids, phenylalanine or tyrosine.
Also if you shoot anyone in the heart your almost guaranteed to stop a person in their tracks when you take out a persons heart, which is were Zimmerman's bullet hit and destroyed the hearts tissue. Rarely does anyone survive that wound to their heart. There would be no way TM could deal the blows he did to Zimmerman after sustaining such a wound. The powder burns and angle of the shot will be even more evidence that TM was on top.
9mm vs .45 vs Rifle A Dr's View of Gunshot Wounds. Video is graphic
Dr. Andreas Grabinsky (Anesthesiologist) from Seattle, talks about GSW's. He works with the surgeons and trauma team in the OR. He provides a interesting look at ballistics from their perspective. Essentially he considers a handgun wound, a handgun wound, and that common calibers lack power. He also makes distinctions between the types of damage seen from the traditional rifle round and the modern small caliber high velocity rounds.