"Political correctness" is not just a recent phenomenon. And not just one political or social structure has been guilty of it. The problem is not with social structures themselves, but when the social structures obtain the political power to abuse the individual with "political correctness". The individual, not the social structure OR the group, however that is defined, that is most important.
In times past, religion determined what was "politically correct". Religion has the history of investigating witches, scientists, and heretics. The political power of the Church, as a political machine determined what was "politically correct". Political power in such an institution does not grant individual liberty of conscience.
In more recent times, political ideology and nationalism determined what was 'politically correct". "Political correctness' was determined by Nazi Germany. And the discriminated were the Jews. Political power seeks to affirm one group, however that is defined, at the expense of the other.
Today, religion and science vies for the power for "political correctness". Religion, on the one hand, demands obedience and respect, irregardless of questions, opinions and various individual differences. These believe that there is "one way of understanding human experience" or "God", when it comes to religion.
On the opposite end of political correctness, is science. Science determines what is "real" and what is seeking to understand what is the political correct view of "being human". "Human Nature" is what will be the "politically correct" way of being in the world. There is no individuality there.
Both religion and science seeks to be the determination of global affairs instructuring the world "in their own image". This is why we are in our culture wars today.
Islam, as the "correct" discriminated party today, is protected under our 'politically correct" political "order". No one can say anything against a Muslim because the world is doing its penance toward Islam's discrimination. This "politically correct" view is not dissimilar to African Americans and their discrimination. How is a "political correct" view not discriminating against those that differ in their views?
The world is doing it penance toward these racial /religious discriminatons by a re-distribution of wealth and power. And it is a dangerous enterprise to say the least. Whenever one justifies victimization to an extreme, then we do disservice to human development and enable the victim to remain unchanged. There is a place for affirming "what happened", but there is no justification for "social justice" when justice seeks to make others pay for another 'time' or place in history!