You yourself admitted that such historical controversies are extremely complex and contradictory. Only trained historians with thousands of hours to spend on sifting the evidence could possibly do justice to it, and even then, all conclusions are colored by politics and ideology. Even historians hotly debate these things.
Do you realize how pointless it is to enter this minefield....on an Internet board? On a thread started by a troll, who thinks posting random photos with no context constitutes an historical argument?
If you want to go to the library and wade through the enormous amount of material to decide for yourself who deserves what blame for 65-year-old atrocities, be my guest.
That some members (even some prelates) of the Catholic Church committed crimes (or remained silent as they were committed) during the Second World War, I do not doubt. Terrible but true.
That some members of all sorts of organizations in all the world do terrible things in the organization's name (especially during the era of the Second World War), I also do not doubt. Human nature, being what it is, all too often giving itself over to the Devil's wiles.
The Fall is at the heart of it. You don't need to pore over thousands of pages of documents to see that.
That applies to Catholics, to Protestants, to Muslims, to Jews, to atheists, to all human beings---including to Orthodox.