 Thus, most of the members of the new group were former members of the Fourth Group of the Durruti Column, at the head of which Pablo Ruiz, Progreso Ródenas and Eduardo Cerveró had been, among others.From its establishment on March 17, until May 3, the Group held several meetings, launched various manifests and leaflets, demanding the release of the libertarian leader Francisco Maroto del Ojo, sabotaged the intervention of Federica Montseny at a meeting on April 11, and filled the walls of Barcelona with posters explaining their program.The essayist Miquel Amorós (The Betrayed Revolution) identifies the Barcelona May Days with the revolutionary platform of the Friends of Durruti.