This is research in the field of Political Economy of Communication,Information and Culture (EPICC), and its theme is the communication of the Catholic Church as a tool for the defense of democracy in the South of Rio deJaneiro. The object of study is the bulletin O Diocesano, a publication that was bornin the 1970s and belongs to the diocese of Barra do Piraí – Volta Redonda. The main objective of the research is to seek to understand the changes in the communication of the Catholic Church in the South of Rio de Janeiro and the possible interference of capitalism and neoliberalism in the positioning of this Church. To this end, we selected two periods: the years 1970 – 1973 and 2020 –2023. In the first phase, of creating the printed bulletin, the local Church adapted to the guidelines of the Second Vatican Council (1962-1965) and the Episcopal Conference of Medellín (1968) and faced several conflicts with the military, due to the dictatorship. In the second phase, with O Diocesano in the format of a digital magazine, the scenario is one of a pandemic, anti-democratic acts calling for the return of the dictatorship and the dissemination of false news during the administration of the then President of the Republic, Jair Bolsonaro, and shortly after the inauguration of Luiz Inácio Lula da Silva. By establishing a comparison between the two moments, we seek to evaluate the use of O Diocesano, in defense of democracy, freedom and against censorship and fake news. The methodological path was mixed, with an emphasis on qualitative research. We adopted procedures for analyzing the content and indicators of participant observation with quantitative data and interviews. The dissertation proposes an understanding of the use of Odiocesano based on document studies and research on communication in the Catholic Church and the transformations from the point of view of neoliberal influence in the model for choosing themes, production, positioning and distribution of the newsletter.