It started in the 60's when the Pope began to ask forgiveness for various "sins" of antiquity. Interestingly enough this new found repentance started about the same time as the Roman Catholic promotion of Ecumenism. If only the Papal confession included sins of heresy, the confessions might be less suspect. Here is a suggested list of real sins the current Pope might consider confessing:
A Fiction Account of Repentance:
“I, Pope John-Paul, would like to ask the forgiveness of the whole world for spreading my evil and destructive doctrine, which is called Roman Catholicism.
“Among the heresies I would like to renounce is the heresy of the Filioque, which destroys the theological understanding of the Trinity. I would also like to renounce the following heresies:
“the teaching on the immaculate conception which we have thought up;
“our use of statues, like the pagans and idol-worshippers;
“the ban on our clergy entering into marriage;
“our introduction of the papist calendar;
“our distortion of all the sacraments which we accepted when we were Orthodox – for example, our heretical practice of baptism by sprinkling, which is like the practice of the Protestants, and our use of unleavened bread, which is like the Jews;
“our teaching that I the Pope am infallible, a teaching that forms the foundation of all the above-mentioned sins, which thereby witness to the fact that I am not infallible.
“I would also like to repent of the fact that I have drawn the Orthodox patriarchs of our century into the new heresy of ecumenism.
“From all the above examples it is evident that I have fallen away from True Christianity, and therefore both my actions and those of my predecessors are like the actions of the pagans, like whom I in the name of ‘Christianity’ killed, burned and destroyed everything that I could and everyone that I could for the sake of spreading my false teachings.
“The list of such evil works includes the Inquisition, when innocent people were burned at the pillar of shame, which witnesses to my unchristian attitude to people; and the crusades, which ravaged the capital of Orthodox Byzantium, Constantinople; the invasion and conquest of America, as a result of which with my blessing the two main indigenous civilizations there were annihilated; the murder by dismemberment of the holy Martyr Peter the Aleut, an Orthodox Christian who suffered in San Francisco at the hands of my Jesuit monks because he did not want to convert to my disgusting faith; and in our century, my predecessor Pius XII’s blessing of forcible conversion in Croatia, during which 800,000 Orthodox were killed because they did not want to convert and be subject to my papal authority.
“From all the above it follows that I am in a wretched condition, and I intend to ask forgiveness. I intend to renounce this heretical teaching and accept Orthodox baptism…” (From The True Church in The Last Times by Vladimir Moss)