That is widely recognized as a dark time in the US because of the Cold War and that kind of "McCarthyist" discrimination was loudly and prominently rejected aft

That is widely recognized as a dark time in the US because of the Cold War and that kind of "McCarthyist" discrimination was loudly and prominently rejected after a decade or so. It's anti-communist discrimination that was relatively new and short-lived. You can identify the beginnings and endings of that time as an era, doesn't seem like a perennial norm to me. Edit: the above is perhaps a bit of an incomplete thought. I'd generally argue that picking wartime era hysteria is a little misleading, that happens to basically every country. On the other hand, there's a reason why people always jump on the "myth" of the First Amendment when it's mentioned in discussions about private companies: Americans often confuse the constitutional principle with the general principle, and they do this because Americans are largely supportive of the general principle.