This article tries to analyze the constitution of political manifest as artifacts for the interpretation of the ideas that justification and has made possible the social mobilization and the configuration of resistance processes by the labor movement, during the first decades of the 20th century. To this end, the productions of two worker leaders are studied: Tomas Uribe Marquez, for the Colombian case and Edgard Leuenroth for the Brazilian case, within the framework of a comparative intellectual history. With the intention of structuring some common patterns of interpretation, this analysis is configured around the way in which leaders understood and made use of some left-wing ideas in light of the conditions of possibility offered by the contexts of Brazil and Colombia. As a starting hypothesis, this article states that the production of the manifestos made possible the systematic articulation of ideas with revolutionary practices and resistance within the labor movement.