You along with other Christian white nationalist types have many misunderstandings when you talk about this. First off you conflate a preference for a nation with a preference for a race. "White" people are not a nation. I'm an American, I have a preference for Americans and America. A preference for Russians because they're white makes no sense. I have much more in common with the Indian-Americans I work with than any Russian, and that preference would only make sense if I idolized race. Secondly, in Mit Brenender Sorge you point out that Pious XI said "Given these native priests, people of their own race will be more easily converted to Christ". However Pious XI isn't using race to mean "white" or "black" and it's obvious even from the earlier sections you highlighted: "As a matter of fact, the native clergy will prove to be most useful... by birth, temper, sentiment, and interests is in close touch with his own people". This obviously refers to nations. A German priest will better understand the German people, an Igbo priest the Igbo people, a Vietnamese priest the Vietnamese people. There's no reason to think a white American priest will have some special understanding of the Russian people. It's obvious that cultural fluency and understanding helps priests tend to their flock. But in this sense of understanding, which priest is the same "race" as a white man from Alabama: A black priest from Alabama, or a White priest from Poland? What about a latino parishioner from New York: A white priest from Queens, or a Latino priest from Brazil? I and the Catholic Church both understand that it's better to have someone of your own culture preaching to you. It's okay to prefer that as well. Some foreign priests have strong accents that are hard to understand, some don't get cultural touchstones. It's even good if you're an Irish-American Catholic and you have an Irish-American priest. Here is the truth though: in America and increasingly in Europe the people of your "race" don't have the same color skin as you. What you and other white nationalists do isn't just a preference for someone of the same culture or "race" as Pious XI calls it, it's making an idol of skin color. You prefer people far less similar to you than the Latinos or Africans in the pews next to you. It's racist, it's potentially dangerous, and it's wrong.