In the context of the bicentennial of the Independences, this research aims to analyse the participation and interaction of public writers in the political debate and in the formation of modern public opinion through the speeches press politicians in Lima, Buenos Aires and Santiago de Chile from the May Revolution (1810) to the Protectorate of General Jose de San Martín in Peru (1821-1822). In this sense, these critics and rebels of the various spaces studied intervened in the experience of the revolution of the print and in the propaganda war unleashed in continental perspective seeking political legitimacy in times of revolution and Independence.