Would you please consider using the word "respect" (or disrespect) instead of "politically correct"?

[Jim Lane]

34. No, it was in the early 1970s.

The term did indeed arise on the left. Some progressives/radicals were intolerant of any deviation from what they perceived as the proper ideology, including any use of terms they thought inappropriate. Others, reacting against this holier-than-thou attitude, coined "politically correct" as a mocking description of it. Like hobbit709 in #10, I've been hearing the term for 40 years or so. Wikipedia confirms this, quoting an author named Debra Shultz: "Throughout the 1970s and 1980s, the New Left, feminists, and progressives . . . used their term politically correct ironically, as a guard against their own orthodoxy in social change efforts". (from http://en.wikipedia.org/wiki/Politically_correct)

As you say, it was only subsequently adopted by the right wing. Incidentally, I can't recall that right wingers have ever displayed any similar widespread awareness of excesses on their side.