A specter is haunting Europe — the specter of communism. All the powers of old Europe have entered into a holy alliance to exorcise this specter: Pope and Tsar, Metternich and Guizot, French Radicals and German police-spies. …The commies always targeted the Catholic church first.
— Communist Manifesto, preamble
I'd say judging by the current Pope, they were successful.
🙋👍