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, nor 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 to co-operate with evil, and 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.
Now, check out the illustrations, by Billy Beck.
The title of this post is a reference to an episode of Star Trek:TNG where Picard is captured, starved and tortured. All he has to do to be granted a life of "respect" and "luxury" from his captors, in study and inquiry of the arts, sciences, and philosophy, is to affirm that he sees Five Lights. But there were only Four Lights.