http://www.nobeliefs.com/ChurchesWWII.htm#anchor2
(The following is from the above link)
The Catholic Church during WWII ~
Compelling Jews to wear yellow badges came from an invention of the Catholic Church. The Fourth Lateran Council of 1215 set up the Inquisition along with enforcement of Jews wearing a yellow spot on their clothes and a horned cap (pileum cornutum) to mark them as the murderers of Christ and to remind them of their descent from the devil. During the Black Death plague which ravaged Europe in the 14th century, the Catholic clergy aimed its blame at the Jews claiming they worked for the Devil and had poisoned the wells and springs. Their extermination compares with the pogroms that took place in the 20th century under Hitler. During the Spanish Inquisition, the Catholic Church directed its actions against the baptized Jews, the marranos. They forbade them to hold any office in the Church or the state; many suffered torture or death.
Popes have traditionally supported anti-Jewish acts and beliefs. Pope Paul IV in the sixteenth century established the Roman ghetto (another Catholic invention). For more than two centuries afterward, Catholics humiliated the Roman Jews and degraded them at the annual carnival. In the same century, Pope Gregory XIII instituted enforced Christian sermons insulting Judaism. [Cornwell, p. 299]. In a Papal custom Popes performed an anti-Jewish ceremony on their way to the basilica of St. John Lateran. Here the Pontiff would receive a copy of the Pentateuch from the hand of Rome's rabbi. The Pope then returned the text upside down with twenty pieces of gold, proclaiming that, while he respected the Law of Moses, he disapproved of the hard hearts of the Jewish race. [Cornwell, p. 27]
Forcing Jews, and heretics into the Catholic faith, of course has always served as a hallmark of Catholicism. When they could not legally use strong-arm tactics they used propaganda. Although most people associate the term with Hitler, propaganda actually came as an invention by the Catholics long before the Nazis, from the Sacra Congregatio de Propaganda Fide, an organization established by Pope Gregory XV in 1622.
In the 1930s, as the Catholic leaders listened to Hitler's rhetoric against the Jews during his appeal for power, his speeches condemning Jews only correlated with the Church's own long history of Jewish hatred. Indeed, in Hitler's meeting with Bishop Berning and Monsignor Steinmann on April 26, 1933, Hilter reminded his Catholic guests that the Church, for 1,500 years had regarded the Jews as parasites, had banished them into ghettos, and had forbidden Christians to work for them. Hitler said he merely intended to do more effectively what the Church had attempted to accomplish for so long. [Lewy]
It should come to no surprise that at no time before or during Hitler's rise did the Catholic Church speak up against such talk. Sadly the Church remained mostly silent, with its main objections concerned with its own power structure in Germany. Thus it aimed to prevent loss of control and, indeed, to gain Church control through an expansion of papal power, control of appointment of bishops, and the control of Catholic schools. This self-serving interest gave the Vatican an impetus to form an agreement with Germany. In this sense, Hitler actually saved Catholicism in Germany, especially considering that Bismark before him had begun a Kulturkampf ("culture struggle"), a policy of persecution against Catholicism. [Cornwell, p.14]
(for more of an education, just keep reading)
