This has been an interesting and sad case. In my opinion, it says a great deal about where we are as a nation, and not all of it good. Ultimately it comes down to this:
This is what we KNOW...
An armed adult profiled and repeatedly followed an unarmed black teenager. This teen repeatedly attempted to get away from him -- first by walking, then running. Ultimately, the adult was able to catch the teen, a conflict occured, and the teen was gunned down. These are the basic facts agreed to by everyone involved.
For everything else there are questions, and most of the "answers" have come from the statements offered by the adult who has the most to gain by lying. Many of these statements are conflicting or (IMO) downright ludicrous.
BUT...
The prosecution has to convince all six jurors that GZ is guilty. He needs all six, and given the political and cultural overtones of this case that was always an outlandishly long shot. Which is why I get the feeling the prosecution didn't really bother.
Final thought: Had it been ME out there that night instead of Trayvon I would have made it home just fine. I would have been home for dinner. I would have made it home because Zimmerman wouldn't have marked me as a target.
In my opinion only.