I dont know if Id put it quite like that but  from my quick reading of that source I didnt notice it using the term political correctness anywhere  It could be mentioned on political censorship but I dont see how it belongs here  Implicitly asserting that its related and that its eg an example of political correctness is original research unless you have a source saying so specifically  Even listing explicit uses of the term is tricky because its original research to collect a bunch of usages and use that to try and research the history yourself the best sources are academic papers or published books by historians or experts on culture and the like that explicitly detail the history use and meaning of the term  Since this is such a hotbutton topic actual histories that mention it explicitly are not hard to find  Theres no need for us to try and do our own original research anyway But listing examples of political censorship definitely doesnt work we need at the very least some source connecting it directly to the concept of political correctness before it belongs here