When democracy is under threat from authoritarianism, models of resistance must come to the fore. Giustizia e Libertà, founded by the Italian thinker and activist Carlo Rosselli in 1929, is one intriguing historical example. Operating both in exile and as part of a clandestine network at home, the organization fought against fascism and Nazism, while criticizing Stalinism. To defeat the enemy, the group aimed to go beyond the Marxist notion of class and to assert fresh concepts of nationhood and Europe. The book traces the group’s trajectories and debates and follows its legacy to the present.