ABSTRACT: In Italy during the last years It’s been possible to observe the structuring and then the partial de-structuring of a close bond between the movement for a global justice (and other local movements) and the Refoundation Communist Party (Prc). Since 1999, Prc started to debate some principles of classic Leninism through a critic re-reading of the communist experiences of the XX century and the consequent consciousness of the communist no-self-sufficiency. After this, the leaders of the party could throw out the new strategy of an horizontal link to social movements. The relationship between Prc and social movements seem to go on without particular problems until the participation of Prc to the center-left govern in a moderate coali...