Human Events says that Juan Williams was "visibly shaken" by his PC firing. It's obvious that this has never happened to him before, because he was immune. It happens to us all the time.
Kathy Shaidle has a good roundup of reactions. The weirdest "revolution eating its own" aspect of this is that Williams was defending Muslims from Bill O'Reilly when he interjected a brief moment of normal fear of Muslim terrorists.