CNNW Anderson Cooper 360 April 6, 2012
conclusions so you can decide for yourself, based on the evidence, what happened that night. today a leading forensic audio expert listened to george zimmerman's 911 call and weighed in on whether zimmerman uttered a racial slur when he got out of his suv to follow martin. it's only 1.6 seconds of audio, but it's important because the federal government is investigating this as a possible hate crime, and the audio in question could be a major piece of evidence. the fbi is certainly treating it that way. they are doing their own analysis of the tape. before we go any further, though, ...