From the self-abasements of Charlie Chaplin and Lenny Bruce's provocations to the present-day culture warring over figures like Dave Chappelle and Hannah Gadsby, comedians have always been not simply entertainers, but charismatic observers of (and participants in) social anxieties and pathologies. Performers as varied as Mort Sahl, Richard Pryor, Margaret Cho, and Louis CK have courted both devotion and outrage at various points in their careers,...