the people who opposed rosas formed a group called "asociacion de mayo" or may brotherhood. it was a literary group that became politically active and aimed at exposing rosas' actions. some of the literature against him includes "the slaughter house", "socialist dogma", "amalia" and "facundo". meetings which had high attendance at first soon had few members attending out of fear of prosecution. rosas' opponents during his rule were dissidents, such as josé maría paz, salvador m. del carril, juan bautista alberdi, esteban echeverria, bartolomé mitre and domingo faustino sarmiento. rosas political opponents were exiled to other countries, such as uruguay and chile.