Political correctness is communist propaganda writ small. In my study of communist societies, I came to the conclusion that the purpose of communist propaganda was not to persuade or convince, not to inform, but to humiliate; and therefore, the less it corresponded to reality the better. When people are forced to remain silent when they are being told the most obvious lies, or even worse when they are forced to repeat the lies themselves, they lose once and for all their sense of probity. To assent to obvious lies is in some small way to become evil oneself. One's standing to resist anything is thus eroded, and even destroyed. A society of emasculated liars is easy to control. I think if you examine political correctness, it has the same effect and is intended to.
Original source, an interview in 2015, link no longer active.
Some of the most obvious lies are:
These are very obvious lies which people are made to believe and repeat. They are part and parcel of the communist, collectivist dismantling of the true order of things and for the restructuring and rebuilding of society for the alleged utopia.
When a population assents to obvious lies, they become, as Dalrymple said, "emasculated liars" unable to resist, because they stripped that ability from themselves due to their assent of obvious lies.
This is how Western nations have been destroyed. They thought nothing of these lies, and those who did not believe them, remained indifferent to them, allowing obvious falsehoods to be propagated that eventually bring harm to them. This highlights the great importance of immediately exposing, halting and demolishing obvious lies, from their initiation and foundation, otherwise the consequences are dire.