Anyone who wants to understand PC MUST read the last pages of 1984 and the very short chapter on Newspeak.
PC seeks to win the debate by eliminating the words to engage the debate.
Thus the politically correct to say the preamble to the US constitution (We the people etc...) is to simply say "thought crime".
Has not everyone notice how the words mother and father are forbidden now? Its all "parent" or "two parents" or "good parent". Never good father or good mother.
PC is thought control that would make Goebles proud.