Hitler conspired with Pope Pious XII and Grand Mufti of Jerusalem, Haj Amin al-Husseini, to commit genocide and all three of them escaped justice. In fact most of the genocidal maniacs of WWII escaped justice. Many of the were imported to America and went on to live very comfortable live. Many of their decendants are committing the genocide we are watching today.
These people use moral codes found in books, like the bible, to justify exterminating "non-believers". They will keep doing so as long as people obediently follow along believing the are special and ordained by God to kill in his name. Murder begets murder. Torture begets torture. Love begets love.