PALERMO, ITALY - DECEMBER 05: Members of the 'Addio Pizzo' association which helps fight the Mafia system, celebrate the arrest of Mafia Boss Giovanni Nicchi in front of Police Headquarters on December 5, 2009 in Palermo, Italy. Giovanni Nicchi, who has been on Italy's 'most wanted list' since 2006, is considered to be number 2 in Sicilian Mafia. Addio Pizzo is an association wich fight.