The movie "Good Night and Good Luck" enshrines with a vengeance the myth that the late Edward R. Murrow was a White Knight who came to the rescue of an America engulfed in fear and hysteria, thanks to Senator Joseph R. McCarthy and his investigations of Communist influence (in and out of government) in the United States. The fact is that, far from making "wild accusations," McCarthy really didn't know the half of it. Information from Soviet archives and the "Venona (military decripts), publicized after the fall of the Soviet Union, clearly showed that the U.S. government and many of...