I don't see how you're making this connection.
Forget Darwin for a moment. The Catholic Church has never called for the extermination of "lesser races".
Just the opposite--- the Catholic Church has historically wanted all people to become Catholics, regardless of race, and it has been against all forms of family planning, such as the one child poicy of China.
So how is the Catholic Church racist? Racist against who? Is Francis Arinze, the Nigerian Cardinal, supposed to be racist? Edith Stein? Or Augustine, who was from North Africa?
Maybe you're against immigration and free trade. Well, historically, the KKK has also been against those things. Does that mean you're a racist since they are?
Or course not! Painting with that kind of broad brush would be totally unwarranted!
So why are you doing it?
I never said that Catholicism did. I only stated that catholicism embraced darwinism.
Catholicism, by and large, kindof cherrypicks what it will heed from any given source. If Origen, say, were Pro-gay and anti-prostitute, Rome might cite him on the pro-gay and demean him on the anti prostitute, or vice versa. Or they might discount him altogether on the two issues or affirm both. They might also cite him out of context in support of something he's actually refuting. But that's another story.
The point of mentioning Catholicism and tying it in was specifically "replacement theology" - the place where Hitler got his notions that the Aryan race could substitute itself as the chosen. Catholicism had already formulated that notion. With racism picked up from Darwin who is affirmed by catholicism as evolution is concerned, Hitler grabs it all.. thus the racism.. not from Catholicism; but, from Darwin's writings because Catholicism affirmed him.
I think it was noted (not by me) that Hitler considered what he was doing to the Jews as a continuation of Rome's Crusades and inquisitions. I didn't initially mention that because I haven't read about it to back it up; But if true, it would further support the point I'm making. There are consequences to actions. And affirming darwin seems to have had consequences that may or may not have been intended by Rome. I don't offer an opinion either way.
You guys don't pay much attention to what is actually said and go off half cocked at the first thing you can stir into a self-martyrdome act. So spare me.