CSDC 100

At the beginning of the 1970s, in a climate of turbulence and strong ideological controversy, Pope Paul VI returns to the social teaching of Pope Leo XIII and updates it, on the occasion of the eightieth anniversary of Rerum Novarum, with his Apostolic Letter Octogesima Adveniens¹⁸⁶ Cf. Paul VI, Apostolic Letter Octogesima Adveniens: AAS 63AAS — Acta Apostolicae Sedis (official gazette of the Holy See)Volume 63 (1971) at vatican.va — scanned PDF (1971), 401-441.. The Pope reflects on post-industrial society with all of its complex problems, noting the inadequacy of ideologies in responding to these challenges: urbanization, the condition of young people, the condition of women, unemployment, discrimination, emigration, population growth, the influence of the means of social communications, the ecological problem.