In addition to the charges of his immoral neglect of the cases of innocent children, molested and raped by priests, this Pope was also guilty of condemning priests who were active in support of the poor in South America.
Former Cardinal Ratzinger, now Pope Benedict XVI, systematically opposed Liberation theology. Through the Congregation for the Doctrine of the Faith, led by Ratzinger, the Vatican condemned Liberation theology twice (in 1984 and 1986) accusing it of Marxist tendencies. Leonardo Boff, for example, was suspended, while others were reduced to silence.
In 1980, San Salvador's prelate archbishop Oscar Romero, clashed with Pope John Paul II during his visit to Europe. Romero was later assassinated during Mass in San Salvador by members of right wing death squads associated with the government of El Salvador, which was in turn, supported by the US Government, diplomatically, financially and militarily. Close to Liberation theology and opposed to the death squads, Oscar Romero argued that El Salvador's government couldn't be supported because of its legitimation of terror and human rights violations. It should be noted, however, that at a dinner celebrating martyrs throughout the world, Pope John Paul II expressed outrage that a commemorative plaque had not been prepared for Romero. "He was a zealous pastor who died for his flock," the Pope said, and while John Paul II thought certain political groups had misused Romero's name, he never doubted that Romero had died for the Catholic faith.
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It is interesting that a man associated with the oppression of the priesthood is also associated with the oppression of the very young and innocent.
Update: By the way, the congregation that then Cardinal Ratzinger headed was historically the same that brought us the Inquisition....
On July 21, 1542, Pope Paul III, with the Constitution Licet ab initio, established the Supreme Sacred Congregation of the Roman and Universal Inquisition, staffed by cardinals and other officials whose task it was "to maintain and defend the integrity of the faith and to examine and proscribe errors and false doctrines". It served as the final court of appeal in trials of heresy and served as an important part of the Counter-Reformation.
This body was renamed the Supreme Sacred Congregation of the Holy Office in 1908 by Pope Saint Pius X.
The Congregation's name was changed to Sacred Congregation for the Doctrine of the Faith on December 7, 1965