I disagree with #3; this is not good for Obama. Many blacks were going to vote for him anyway, and few whites or Hispanics (in private) sympathize with the shooting “victim”.
I also think Zimmerman is going to jail, though I hope he doesn’t if it was justified.
I don’t know enough about it to have an opinion at this point.
As for Zimmerman, justified or not justified has already left the picture. He has been sacrificed on the altar of public opinion.
Do you recall the case of the Ohio National Guardsmen? For years they were savaged by the Communists in the media and the politicans were under tremendous pressure to prosecute them. Only Governor Rhoades standing firm prevented it. I do not believe that those in power today have that political courage. I would hope that they do but, there has been no evidence that I have seen to indicate it.
This won't change anyone's opinion, true but it will fire up the base, black people who will vote for Obama come what may because he is black and leftist white people who would vote for Obama anyway because he is red.