No where in this document, nor in either of the Vatican’s other two documents on liberation theology, does the Church condemn liberation theology as a whole. Nor does the Church even condemn all of the ideas of Marxism. John Paul II in fact used Marx very clearly in his encyclical Laborem Exercens. Anyone with even the most basic knowledge of Marxian themes can see Marx’s influence on John Paul II. Paul VI affirmed the compatibility of some forms of socialism with Catholicism and used Marxian terminology in his encyclical Populorum Progressio. In fact, by warning against “a-critical” uses of Marxism, the Church implies that critical use of Marxism is in fact acceptable, and this is what most liberation theologians in fact do. Indeed this is what official Catholic social teaching has done since the Second Vatican Council.Michael is certainly right that the Church has never condemned liberation theology in toto. (Nor has it condemned capitalism or capital punishment or sexual relations in toto, howbeit that is the impression one often receives reading the rantings of the fringe left and/or right, or even many presentations within the mainstream press which abandon, for the sake of a catchy headline or a cheap soundbyte, the carefully-nuanced position of the Catholic Church.Once again, this is not a condemnation of liberation theology. It is merely a warning against certain tendencies. The only way one would know this, though, is to know the history of the disputes and to know the Vatican’s two previous texts on liberation theology neither of which condemn liberation theology in toto.
Finally, it is important to consider not only this message to the Brazilian bishops, but a message to the same bishops delivered by the Venerable John Paul II who insisted that liberation theology is “both useful and necessary.”
At any rate, as Michael wisely suggests, on the matter of "liberation theology" the remedy here would be a close study of the texts. For our readers' benefit, a compilation of texts by Pope John Paul II himself.