The Catholic Church hierarchy nearly everywhere has been reactionary. The Catholic Church had been in with the ruling classes in Europe forever. This was one of the main reasons why the Bible was never translated into the vernacular and why masses were always held in Latin. The people could neither read not speak Latin, hence there was a huge disconnect between the Church hierarchy and the people.
This is similar to many other religions, especially eclectic religions of the Middle East such as Yezidism, Alawism and Druze. In all of these religions, the secrets of the religion are usually held in secret by a priestly caste of mostly men, though the Druze actually have female priests. For a long time, the secret book of the Yezidis was thought to not even exist except perhaps only in oral form – this is how secret it was. This ended when an actual copy fell into Western hands around 1900.
In all of these religions, the “real true” religion is in the hands of the priestly caste and they make sure not to tell any outsiders what the religion is about. Hence it has been very hard to get good data on any of these religions. The people are fed some watered down version of the religion that doesn’t mean much of anything and if you ask the average Alwai, Druze or Yezidi what their religion is about, you will only get some diluted harmless synopsis acceptable for outside ears. Usually what the people say the religion believes and what it really believes are two different things altogether.
The Catholic Church was in with the rich and in Europe especially in the Middle Ages it was very wealthy. It was this extreme wealth that enabled the Church to build those huge architectural masterpieces we see in the form of Medieval churches across the north of Europe, especially in France and England. They sold the peasants pie in the sky when you die like religions always do. It was this anti-people, pro-rich philosophy that made Marx so hostile to religion. He was not so much against it because he was a materialist and he thought it was superstition; he was also against it because he thought it was reactionary.
The hierarchy of the Church remained reactionary all through the 20th Century. Archbishop Oscar Romero of El Salvador and the four Catholic priests assassinated in 1989 at the start of the great guerrilla offensive (a crime that was plotted in the US ambassador’s office of the US Embassy two days before) were the exceptions to this rule. The Church hierarchy in Venezuela and Nicaragua remain rightwing and hostile to the Sandinistas and Chavistas to this very day. Same with the church hierarchy in Spain to the best of my knowledge.