Cashin,
What makes you think he is obligated to identify himself at all? Especially since he was reportedly on his way to the store and not on patrol as a NW captain.
Even if he does have to identify himself, Trayvon never had the right to sucker punch him or start a tussle. Even if he saw his gun in a holster that is nothing that reasonably should make him fear for his life or serious bodily harm. If that were the case anybody could see a gun in sombodys holster and start throwing down on them.
The gun has to be out for there to be a threat.
Didn't say he was obligated to identify himself & we don't know that Trayvon did start the tussle. Only have Z's word for that. But don't you think if he did, he would have said it & it would have been reported as well as what was reported about? Or come from his father or brother like other things have?
Like you say, we don't have all the verified facts but evidently given the 911 call & whatever else they have, the prosecution thinks they have enough for murder in the 2nd degree. And I doubt they took that decision lightly given the magnitude of the case. If they can convince the jury that Z is lying in some area, it would also be easier to sway them on other things.