I'm not denying that Communism was a threat I just don't think that most of the filmmakers blacklisted posed such a threat. And what I said about radical leftism being fashionable back then was true. In various chic and intellectual circles it was. Sad but true.
Sad, but not true. You need to understand more how marketing works. Propaganda is a large part of marketing. Make it sell. Chic sells. What's "in" sells. If something is appealing at a fashionable level, the message is backdoored. Marketing has a large vice in the media. Hence is why the art and film industry was hit first.
I would tend to agree with you, but if I'm not mistaken there were a couple of people involved(not necessarily the Ten) that had to do with Trotsky being assassinated by Stalin's agents in Mexico.
I think though, that there would be no controversy had members of a Nazi or fascist party been blacklisted by members of the film industry ('twas not a govt blacklist.) Commies get a free pass, for some reason.