What the Aparecida bishops are preaching in terms of community renewal is not something new or even Marxist. The Bible gives an ideal:
369. We find the paradigmatic model of this community renewal in the early Christian communities (cf. Acts 2:42-47), which were able to keep seeking new ways of evangelizing in accordance with cultures and circumstances.
Vatican II, partly in its occasionally-maligned spirit, but also in its documentation endorsed what is essentially a christocentric ideal:
We are likewise prompted by Vatican II’s communion of ecclesiology, the synodal path in the post-council period, and the previous general conferences of Latin American and Caribbean bishops. We remain mindful that, as Jesus assures us, “where two or three are gathered together in my name, there am I in the midst of them” (Mt 18:29).
And Pope John Paul II:
370. The pastoral conversion of our communities requires moving from a pastoral ministry of mere conservation to a decidedly missionary pastoral ministry. Thus, it will be possible for “the program of the Gospel to continue to take root in the life of the Church everywhere” (Novo Millennio Inuente 29) with new missionary zeal, making the Church visibly present as a mother who reaches out, a welcoming home, a constant school of missionary communion.
In other words, mission rather than maintenance.
Remember, you can reference an English translation of the 2007 document from the Aparecida Conference here.