Maurizio Atzeni's work, although it does not discuss the extensive literature on collective action produced in Argentina, offers an intensive dialogue with Marxist theory, with the forms of labour action, and with researchers dedicated to studying it. The book's structure harmoniously combines a more general theoretical discussion with a specific proposal and a case study that ultimately suggests the traces of the labour history of a country and says, together with R. Fantasia, Cultures of Solidarity: Consciousness, Action and Contemporary American Workers (Berkeley, CA, 1988), that solidarity is the only path to reorder human relations in a better way. - Maria Ullivarri, International Review of Social History Journal