PC called by Bill Lind "cultural Marxism" ("The Origins of Political Correctness", February 5, 2000), is believed to originate from Institut für Sozialforschung (the "Frankfurt School"), set up by a group of Marxist intellectuals in Germany (1923). Since then, PC has not only mutated, but got married to Coercive Persuasion and had many ugly and fanatic heirs.