The years between the departure of the United States marines in 1934 and Francois Duvalier's rise in 1957 are usually compressed into a bridge passage between two better known regimes. Smith gives them a book, arguing that Haiti's radical movements in this period genuinely remade political culture before breaking apart. He follows the shift from an elite-led radicalism under Stenio Vincent to the mass urban politics of the 1940s, taking in the student circle around La Ruche, the revolt that toppled Elie Lescot in 1946, the appearance of communist and socialist parties, Daniel Fignole's street following, and the hardening of noirisme under Dumarsais Estime. Rivalry among groups claiming similar aims, he shows, cost as much as state repression, and contingency often outweighed doctrine when alliances formed. Cold war suspicion sharpened everything, since American officials read opposition framed around colour and class as communism. Archives, interviews and the contemporary press carry the chronology.