1984: A WARNING FOR THE REST OF US, A HOW-TO GUIDE FOR THE LEFT: “a sudden hot sweat had broken out all over Winston’s body. His face remained completely inscrutable. Never show dismay! Never show resentment! A single flicker of the eyes could give you away.”
Related: “Reality check: Their faces show how much time they have spent hating others.” Studying the faces of the SJWs.