PC is nothing more, nothing less than a replacement for Christianity!
We have had two thousand years of following the Sermon on The Mount and being forced to admit that the morality contained within just does not get any better than that. It is difficult indeed to claim that anything that sublime could not be divine. [There I go with the rap ideas again.]
Political correctness is an artificial construct of the liberal left designed to supplant the Gospel. It is 'a new morality' which has been cobbled together in much less than a generation.
It is a cheap, nasty, unreasonable, plastic substitute. I prefer the real thing!