Where to begin?
I will just stick with 20th century stuff.
The Pope and others remaining silent as train loads of Jews and 'others' considered undesirable, were being sent to their deaths....after all, they are just Jews, they don't accept Jesus, so burn them! Add to it, aiding war criminal Nazis to escape and provide refuge and passage to places like S. America. Covering for pedophile priests. The Vatican is its own 'untouchable' little piece of land. That is just a few.
For your reading pleasure, check out:
15 Of The Most Absurd And Unforgivable Things The Catholic Church Has Ever Done
By Lea Rose Emery.
Now, to be clear, I am not a fan of any religion. I find them very divisive. They do not unite. They use fear to keep people in line and every one is male dominate, and the female passive/submissive at the least, and slave at the extreme.