Zimmermans testimony which is corroborated by eye witness accounts and evidence such as wounds on Trayvons hands/knuckles, no wounds on Zimmermans knuckles. Apparently you paid attention to the media circus and not the facts of the case or you would have known this already.
the shoot was legal - but we don't know who threw first punch, only that zimm took an ass whooping. He might have swung twice and missed for all we know. More likely, maybe he tried to take down/detail trayvon. Or maybe trayvon started it with the first punch.
Zimm lied about a lot of things about the shooting -e xaggerated a few things over and over with each retelling - so he isn't credible.
but it doesn't matter, because under FL law, the shoot ITSELF was legal. Still, it would be very presumptuous to claim we know who started the fight just because we know who was doing the ass kicking and who finished it. I could take a swing at floyd mayweather and miss completely and get stomped - and i still started the fight.
SO it's okay for ppl to say "we don't know who started it - no credible evidence, since NOODY SAW IT START except the 2 combatants, and one is dead and one is a liar - but it doesnt matter because jury decided shoot was legal