A dictator dictates. He doesn't respond to questions. He doesn't try to persuade. He doesn't try to "reason" with his subject. He dictates, that's it. And if immediate compliance is not forthcoming, you suffer the consequences.
Those who feel compelled to dictate how others should, must, and do evaluate things are no different than any other totalitarian dictator.
That's the whole idea behind "political correctness," a practice developed by the communist party in the 1920's and revived in this country among radicals in the 1960's, led by Herbert Marcuse, the so-called "father of the new left."
He wrote a treatise called "repressive tolerance" which was very influential among it's intended audience.
It essence, the theme was that the values and goals of the left had to be perpetuated by repressing all views seen as opposing those goals/values. Those views had to be "repressed" and NOT tolerated.
The whole modus operandi is nothing new, I'm afraid.
My way, or the highway, pal.