Correct. The term is Marxist, and it emerged in Red China, and was brought to the U.S. by Tom Hayden and Jane Fonda.
As usual, there are millions of people who see a phrase (”politically correct,” “begs the question”) and couldn’t possibly be bothered to find out what it means, and start misusing it.
“Politically correct” does NOT mean “politically advantageous” or “politically expedient.” It means: in conformity with Cultural Marxism or Critical Theory.
They didn't use terms which could translate as "right" or "wrong," because they didn't want to imply that something could be objectively or metaphysically right (or good or true, etc.) The only relevant category --- and this could change by tomorrow --- was "what the Chairman wants."