In the ’60s, the philosopher Herbert Marcuse proposed a new standard for tolerance that specifically excluded perspectives the Left deemed repressive. Giving air to conservative perspectives was “repressive tolerance,” in Marcuse’s coinage. Far from an underground radical viewpoint, this degenerated view of speech is becoming mainstream in academia.

A recent Harvard Crimson op-ed reprises Marcuse’s theme well: “If our university community opposes racism, sexism, and heterosexism, why should we put up with research that counters our goals simply in the name of ‘academic freedom’?” And we are already aware of the Inquisition-like tactics used in the climate debate. “When we’ve finally gotten serious about global warming, when the impacts are really hitting us and we’re in a full worldwide scramble to minimize the damage, we should have war crimes trials for these bastards—some sort of climate Nuremberg.”