"Berg explains that in its original context, PC was a pejorative term used by people who felt they were losing something. Exactly what they were losing is very hard to describe, especially to them. But many sociologists and historians today have come to a consensus on what they call it: it’s a loss of privilege—and in terms of race, a loss of white privilege."

“Political Correctness” is a reactionary term against the loss of privilege. - Racialicious