It was a shocking and shameful period of history.
The techniques it used, are not dead. Today, there is a new McCarthyism. against smokers and smoking instead of communists. Paranoia is spread by dodgy science especially covering Second Hand smoke. It keeps the people in fear. The latest bit of rubbish, that "Even brief periods of passive smoking have been found to cause lasting damage to the brains of children under 10, leading to negative changes in their behaviour." are rediculous, unsubstantiated accusations.
These researchers have been anti smoking infected. They might not even be the generation that know anything real about smoking at all. They might have never heard of McCarthyism. But what they do by publishing such junk is instantly recognised and ridiculed by people to who grew up with smokers, who are smokers, who are old enough and wise enough to have been infected themselves with SHS, to know how absolutely perverted this kind of "science" is, and who are not yet dead!
McCarthyism is not dead either - just used by Tobacco Control instead.
I believe much of the science against smoking and smokers, and now vapers is propaganda in it's most devious form. Unfortunately, the people, the citizens, the sheeples will remain under it's spell, hoodwinked, brainwashed and infected themselves by the new McCarthyism.