Ideology in place that makes “socialism” and “communism” four-letter words to the American public?

ideology in place that makes “socialism” and “communism” four-letter words to the American public?
please help ive been trying to figure this out for hours.. :( might sound crazy but is 4 letter word meaning a curse word?? thanks any help appreciated
Update: but what is the ideaology in place? it says it no where in my text.. i dont get it ?
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