Is assembly revolutionary? For centuries, human action en masse has been associated with violence, and justly feared for enforcing majoritarian privileges over the civil and humanitarian demands of minority populations. The words mob violence, lynching, or pogrom still catch the heart. At the same time, we wonder and debate whether a crowd might be an effective instrument of change from below. Might it not offer a sense of agency with new powers to the subject who has felt her ability to make effective political demands in the world to be chimerical? Recall the crowds occupying Tahrir Square in 2011 before the fall of Hosni Mubarek, sharing scanty food, working around official and unofficial interference with communications and basic services, facing down the expert police forces from the interior ministry, checkpoints and barricades operated by the army, and the weapons, cavalry charges, and flaming explosives of the “unacknowledged” pro-Mubarek paramilitaries.