I can't remember people being denied service for their political views until just recently.
Another odd thing is that a company would give a rip about their employees political views.
These are strange times.
The idea of not discriminating based on politics or other overt characteristics, as a widespread cultural phenomenon, was relatively new and short-lived.
In the early 1970s? I'd like to see some citations of that.
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.
My point is that, as far as I know, the kind of freedoms and political neutrality the West enjoyed between 1980s to 2010s were a short-lived anomaly. Implied in that was an observation that we're on a downslope now and I agree with 'OneEyedRobot that we're not enjoying much of that neutrality today.
Probably wasn't as noticable when they were turning far more people away because of their race, religion, or gender.