The influential Jean-Jacques Rousseau was anti-Enlightenment, advocating censorship, collectivism, and the death penalty for non-believers. For an elaboration, check out this 4-minute clip from my discussion with James Lindsay and Michael O’Fallon: The full 1.5-hour video is here: Related: Stephen R.C. Hicks, Explaining Postmodernism: Skepticism and Socialism from Rousseau to Foucault (Expanded Edition).