Well only Zimmerman knows what happened! Who screamed, who started the fight, etc.? It seems either one of them could have stopped the fight and waited for police. Given that Zimmerman was told not to pursue Martin, why was he not charged with obstruction of justice or interference with a police officer?
The sad part about so many trials is that it is not about finding the truth but about concocting a defense story based on lies that generate reasonable doubt. But reasonable doubt about what? Reasonable doubt has been turned on its head. It is no longer about the facts but about a string of lies that cannot be disproved because dead men cannot talk.
The Florida Stand Your Ground Law is screwed up. Stand your ground is for the victim of criminal aggression — not the aggressor. Martin stood his ground and when he got the upper hand was shot through the heart. This is not following the age-old rule of using only equal and necessary force. Zimmerman was a coward to shoot Martin through the heart.