 The Junta faced strong opposition from the beginning : it was resisted locally by the Cabildo and the Royal Audiencia , still loyal to the absolutist factions ; the nearby plazas of Montevideo and Paraguay did not recognize it ; and Santiago de Liniers organized a counter @-@ revolution at Córdoba . Mariano Moreno , an unimportant politician up to that point , became the leader of the most radical supporters of the Junta . He was supported by the popular leaders Domingo French and Antonio Beruti , Dupuy , Donado , <unk> , and Cardozo ; and priests like Grela and Aparicio . Historian Carlos Ibarguren described that Morenist youths roamed the streets preaching new ideas to each pedestrian they found , turned the " Marcos " coffee shop into a political hall , and proposed that all social classes should be illustrated . Manuel Belgrano and Juan José Castelli supported Moreno within the Junta , and French was promoted to Colonel of the regiment " América " . This regiment , also known as " The Star " because of a star that they wore on their sleeves , was composed of radical youths led by French during the riots of the May Revolution . 
