sentences:  Union of the Socialist Left
  
  The Union of the Socialist Left (, UGS) was a French movement of left-wing activists, founded at the end of 1957 by dissidents from the French Section of the Workers' International (SFIO); former resistants, until then close to the Communist Party; social Christian trade-unionists ("Ligue de la jeune République" and the minority of the Confédération Française des Travailleurs Chrétiens (CFTC)).It was the first alliance between social Christians and Marxists.