< ! -- Image with inadequate rationale removed : The first proposal to constitute a commission of inquiry into the Mafia was the result of post-war struggles for land reform and the violent reaction against peasant organizations and its leaders , culminating in the killing of 11 people and the wounding of over thirty at a May 1 labour day parade in Portella della Ginestra . The attack was attributed to the bandit and separatist leader Salvatore Giuliano . Nevertheless , the Mafia was suspected of involvement in the Portella della Ginestra massacre and many other previous and subsequent attacks
Portella della Ginestra massacre
Portella della Ginestra massacre
Antimafia Commission