the catholic church has had many moments of outright anti-semitism throughout its history. WWII was not one of them. the “sin” of some of the church was in simply being compliant with the nazis and italian facists. the church did much underground during WWII to save more jews than any other organization in the world. but she did not use her prophetic voice to condemn loudly and publicly the things that were going on.
as for other parts in history, we have instances of forced conversions (these are by members… albeit usually large groups… of the church, not necessarily the church itself), persecution, outright killing, and anti-semitic rhetoric. we do have the church, at times, treating the jews as second class citizens. the 400 years the jews were forced into the ghettos in rome for instance. this was instituted by the pope. all the jews in spain were exiled in 1492 (yes, the same year “columbus sailed the ocean blue”). the pope at the time offered them sanctuary in rome (a great thing, condemning their treatment in spain and offering them protection and freedom). that pope died soon after many of the jews (the majority who did not flee to the middle east and settle in safed) came and settled in rome. the next pope was spanish and was a large influence in the jews being expelled from spain! he created an area of the city and put walls up around it and forced all the jews to live within this tiny area (the ghetto). they had to be back within the walls before sundown. they could not own businesses. they could not have a non-jewish servant. they were relegated to 2nd class citizens. they lived in this ghetto for 400 years. finally, in the early 1900’s the new pope lifted these restrictions and opened up the ghetto, permitting jews to move freely, own business and be full citizens. this freedom, however, lasted about 35 years until the facists (who were aligned with hitler) reinstituted the restrictions and forced the jews back into the ghetto (this last even was not done by the church… but it was not spoken out against either).
my point is that, yes, at times the church has been anti-semitic (and i mean all of Christianity, including orthodox and protestants… it’s just that we aren’t as old or as big so our horrible attitudes and deeds are not as widely discussed, but the lutheran church during WWII was also very compliant). at other times, she has refused to use her powerful voice to condemn anti-semitism. and at many times, she had done great things to support the jewish people.