Answer: It is to first define a subject such as a word or sign as politically incorrect. Having done that successfully,the next move- the ultimate is to allow those who one chooses, to use THAT WORD, or THAT SIGN. Having done that, in the Alice In Wonderland world of political correctness, one can say this- "Words mean just what I choose them to mean.
Sorry to off load this homily. In the words of an old song, " I can see clearly now...."
Since nothing is objectively correct or incorrect, there is only one kind of correctness... that is the correctness of the Liberal Internationalizt Speech Protocol (L.I.S.P)
Violators will be shot with a pink pistol.