From burning draft cards to staging nude protests, much left-wing political activism in 1960s America was distinguished by deliberate outrageousness. This theatrical activism, aimed at the mass media and practiced by Abbie Hoffman and the Yippies, the Black Panthers, and the Gay Activists Alliance, among others, is often dismissed as naive and out of touch, or criticized for tactics condemned as silly and off-putting to the general public.

In Radical Theatrics, however, Craig Peariso argues that these over-the-top antics were far more than just the spontaneous actions of a...