If by chance, Zimmerman and his group can prove beyond any doubt, that he was in fact attacked by Martin and acted in self defense, it will be almost impossible for the AG and Obama to prove the case for civil rights violations.
Now, before anyone get their balls in an uproar, notice, I did not make the claim either for or against Zimmerman, as that's up to the courts to decide.
As far as double jeopardy, that would mean he was being tried twice for the same crime, and by using the civil rights violation clause, he would not be defending himself against a murder charge.
Also, a lot of people are making reference to a "911 call" of which there was no such thing. The call that was made public was a call between Zimmerman and his dispatcher.
What a crock, trying to blame and excuse his escapades on Newt Gingrich and his high stress level, when facts are, Clinton has been doing this womanizer crap much before he ever was president and ever heard of Newt, years before.