Catholics had little to do with the holocaust.
Actually Catholics had lots to do with the Haulocaust. Its often not talked about because it makes Christians feel uncomfortable. Jewish hatred didn't engender from Hitler, it came from prominent catholic priests and protestant leaders like Martin Luther and Thomas Aquinas as well as many Popes. Christians in Austria, Italy and Germany had already believed that the Jews were inferior, which stemmed from the Christian texts, which imply that the Jews killed Jesus.