Interesting but long (sorry gene) article about the term PC,and how it has been used in various political campaigns and journalistic clickbait pieces...
https://www.theguardian.com/us-news/2016/nov/30/political-correctness-how-the-right-invented-phantom-enemy-donald-trump?CMP=share_btn_tw&utm_source=fark&utm_medium=website&utm_content=link&ICID=ref_fark