The study is about the evolution of relations between the State and the Roman Church in Chile between 1958 and 1973. A period lived by Chileans, of polarization too much and with governments of different political signs, under the Cold War. The national experience that begins with a moderate right-wing government in 1958 ends in an emotional-political drama with the death of the President of the Republic of a moderate socialist government that was for the first time in the world and in the chosen Universal History cleanly and transparently by a people. And which without being a majority ruled the country. In the midst of this development, the Roman Church, with the Second Vatican Council, drew the best of the winds of social change, agitated by various Chilean groups inside and exterminated the Church in a context of full democracy that even led some to revile and mock everyone. Although it had always been this way in internal Chilean politics, it went to extremes.