In a previous posting1 I discussed the Rosenberg case. In that case Ethel and Julius Rosenberg were found guilty of espionage and both were eventually executed.
What was especially interesting about the case was the refusal of so many for so long to accept that the Rosenberg's were guilty. As of late 2011 it appears that virtually everyone has accepted that Julius Rosenberg engaged in spying and his wife Ethel was well aware of her husband's activities.2
At the time it was quite clear that the Rosenberg's were likely quite guilty. It was also clear that they could be quite useful as propaganda weapons. Both of the Rosenberg's were Communists and in that time period it meant that they were Stalinists.