If you could drmonstrate your claim regarding Roman Catholicism per se and the Holocaust...but it's clear you're avoiding doing so, so forgive me if I refuse to take you seriously.
I don't understand what work the phrase "Roman Catholicism per se" is doing in this sentence.
If you want evidence of the long, wearisome and sorrowful history of anti-Semitism within Christianity, that's easily findable with a quick Google. I've already referred to this.
If you want evidence of Eugenio Pacelli's anti-Semitic sentiments, that's easily findable with a quick Google. I've already referred to this.
If you want evidence of the efforts of high-ranking Catholic figures is aiding and abetting Nazi war criminals to evade justice at the end of the Second World War, that's easily findable with a quick Google. I've already referred to this.
If you are under such a misapprehension as to think that I get all my information via a quick Google, no - I'm using these references as the quickest and nearest and easiest sources for you to uncover/discover the kind of information to which I'm referring with regard to Catholic complicity in genocide, genocide of Jews especially and particularly.
Not that this should matter to you this year, right?