This seems a bit different from my example: being attacked for using a less common term. In this case, the "PC police" (going by your examples) were the people attacking me because I used a term that offended them.
They attacked you because they assume, incorrectly, that you were one of the PC people, because you used a PC term, not just a less common term. This isn't unreasonable and the cost of letting PC people in is high.
