the standard left-wing critique of political liberalism, and all illiberal left-wing ideologies,
Marxist and otherwise, follow the same basic structure. These critiques reject the liberal notion of free speech as a positive good enjoyed by all citizens. They categorize political ideas as being made on behalf of either the oppressor class or the oppressed class. (Traditional Marxism defines these classes in economic terms; more modern variants replace or add race and gender identities.) From that premise, they proceed to their conclusion that political advocacy on behalf of the oppressed enhances freedom, and political advocacy on behalf of the oppressor diminishes it.
It does not take much imagination to draw a link between this idea and the Gulag. The gap between Marxist political theory and the observed behavior of Marxist regimes is tissue-thin. Their theory of free speech gives license to any party identifying itself as the authentic representative of the oppressed to shut down all opposition (which, by definition, opposes the rights of the oppressed). When Marxists reserve for themselves the right to decide “which forms of expression deserve protection and which don’t,” the result of the deliberation is perfectly obvious.
In the contemporary United States, these ideas are confined by the fact that only in certain communities (like college campuses) does the illiberal left have the power to implement its vision, and even there it is constrained by the U.S. Constitution. If illiberal ideas were to gain more power, the scale of their abuses would widen.
