From TheRealGeorgeZimmerman website.

Many people will recoil with uneasyness seeing George Zimmerman talk openly, or thank people openly, while worried about him slipping up and saying or doing the wrong thing.
It is a noble fear to hold, it is also an embedded fear from indoctrination into the fear of falsehood.   I do not subscribe to such sentiments.  But, then again I am not familiar with the inherent constitutional fears of deception.
Truth is on the side of George Zimmerman, and all the spin, optical manipulation, obfuscation and projected agendas will not harm Mr. Zimmerman so long as he keeps his internal compass on the True North heading.     So long as he speaks the truth there is nothing to fear.
I say, good for him to have found his voice.   Prayers for him and his family.