The generation of my parents grew up firmly stating “no more Auschwitz”. My generation is shouting “no more Rwanda”. The failure of the genocide prevention system set up by the United Nations is mirrored in the press that has recently paid great attention to the Rwanda genocide in the occasion of its anniversary. Twenty years after the 1994 massacres the world has turned its head back to Rwanda trying to understand why and how another genocide was possible. This paper’s aim is to assess what have we found looking into the rear-view mirror twenty years later and to draw a lesson learnt from the Rwandan genocide. Particular attention is paid to the post-genocide justice and reconciliation instruments conceived in Rwanda to cope with the heavy burden of the fratricide 1994 violence.