I think people would be blacklisted in exactly the same way in the 50s; this is all fairly well documented in relevant writings from the period.
I think we're in agreement that social media and specifically giving people access to publishing has changed the duration and discoverability of the speech.
Ah I didn't realise the Hollywood blacklist had been that serious! It's definitely not in my lifetime though, I wasn't around in the 50s. I'm also not sure that's a good example; you're talking about what could be termed a national security threat vs. something like saying you don't agree with unisex bathrooms. As I said, the scale is way out of whack.
I'd definitely be interested to see comparisons that are more like-for-like though, if they exist. I'm not familiar with "Time of the Toad", although from a brief look it seems to also deal with Cold War era issues? Again, this isn't a like-for-like comparison.
But they have, this is the very nature of the infamous Hollywood blacklist: https://en.wikipedia.org/wiki/Hollywood_blacklist
Have you ever read "Time of the Toad" by Trumbo?
I think people would be blacklisted in exactly the same way in the 50s; this is all fairly well documented in relevant writings from the period.
I think we're in agreement that social media and specifically giving people access to publishing has changed the duration and discoverability of the speech.