PC? - No, no and thrice no!
Unbelievably, every now and again a writer in the media will seek to defend political correctness and does so by claiming spuriously and possibly disingenuously, that 'it gets people to be nicer and fairer to each other.'This is precisely why PC is not actually defensible - it does not make for less persecution - but more! It fuels 'The Law of Unintended Consequences'.
It trivialises; it demeans; it reduces free speech; it has an agenda; it is humourless; it is catch-all; is always left-leaning; it is seldom logical and it creates masses of wholly unnecessary resentment.
All you have to do if you really want people to treat each other with more respect is to encourage the following of what Christ had to teach us.
That leaves precious little room for nastiness, spite and unreasonableness.
What all must remember is that PC is not and never has been based on benevolence or love of humanity - but only on control thereof!
