Youre' kidding, right?
The reason the Justice Department, and in particular, the Civil Rights Division, hasn't gotten involved is because there does not exist any racial slurs on the tape. That is the trigger, and believe me, if it was there, they would have him in custody by now, if for no other reason than for his own protection.
CNN went over how great the audio expert is, it was in his office with his equipment. Sure, if CNN and this guy have a doctored tape... How stupid would they look if the tape played in court is totally different.
Zimmerman definitely said those evil words at little provocation. No wonder tet are having hoodie walks. My son also wears hoodies. Now as it turns out, the son is no choir boy, but it may not matter.