Recently, the Cato Institute ran a very important panel discussion on the Marxist origins of hate-speech legislation and political correctness.
The two panelists were Christina Hoff Sommer and Flemming Rose.
Rose spoke first, explaining how the Soviet Union and others used hate-speech legislation and political correctness to wipe out dissent.
Sommer followed with a powerful presentation describing the current state of political correctness on college campuses and why it is so difficult to use logic when discussing views with social justice warriors. She was particularly illuminating on the history and rise of Intersectionality Theory.
Find the time to watch this. You will not fully understand what is going on at college campuses today and also its historical context without being aware of what is presented in this video.