I agree with this (James Fallows of The Atlantic):

I agree with my colleagues Coates, Sullivan, Green, Ambinder, plus most of the civilized world, in finding this episode nauseating. Silver lining: the possibility that for the Breitbart/Fox attack machine this could be the long-awaited "Have you no sense of decency?" moment. I disagree with my colleague Clive Crook that it's hard to tell whether the people who first aired and harped on the deceptive video (Breitbart/Fox), or the officials who responded in belief it was true (ie, Ag Secretary Vilsack), are the more culpable. As Marc Ambinder pointed out, it's easy: Vilsack's now-revoked decision to fire Sherrod "was a good faith [though rash] mistake based on the bad faith of others."