Where do the strategies, tactics, and lifestyles of contemporary activists come from? `Movement for a New Society’, a radical pacifist organization active in the 1970s and 1980s, pioneered forms of consensus decision making, communal living, direct action, and self-education now central to antiauthoritarian movements. Brimming with analysis, interviews, and archival documents, `Oppose and Propose!: Lessons from Movement for a New Society’ recovers a missing link in recent radical history, while drawing out crucial lessons on leadership, movement building, counterculture, and prefigurative politics.