 In 1903 he began to read newspapers that opposed the ongoing dictatorship of President Porfirio Díaz, including "El Demófilo" and "El hijo del Ahuizote"; he also met several anarchist writers.After the army (under orders from Gov.Bernardo Reyes) opened fire on a liberal demonstration in Monterrey, Nuevo León, on 2 April of that year, 
he resigned his commission in the reserves.