That is a good point, Jaynek. There is a huge confusion, and it is such an emotional issue most don't want to stop to clear it up, even when you try to make the proper distinctions.
The word "Jew" has basically two different meanings. One meaning is purely religious, the other biological. Catholicism is against Judaism, as any other false religion. Some people may emotionally call Catholicism antisemitic for that reason, which is most clearly mistaken.
Judaism is unique among false religions. It is so closely bound to race because originally God designed the true religion to be preserved among that specific race. After the Redemption, Judaism should have given way to Christianity as a caterpillar gives way to becoming a butterfly, and the true religion to be open to all men without regard to race - universal. However, those Jews insisting on sticking with so-called Judaism (without a biologically traceable priesthood any longer), became тαℓмυdic, and particularly anti-Christian in character. It wasn't until around the 18th or 19th centuries when Jews started up other branches, such as "Reformed Judaism" and even though they were basically non-religious and even atheistic, it became sort of "religious nationalism", keeping a semblance of race & holiness alive, and still being very anti-Christian.
This is where the major confusion comes in - even Jews brought up in families of atheistic Jews are brought up in handed-down/instilled anti-Christian attitudes based upon family sociological heredity. Statistically these Jews are also feared, but it is not because of "blood" that they are. It is because of what they happen to believe in that was naturally instilled by parents and their parents' parents, etc.
Today, however, this is very much thinned out, and the statistical fears are much lower.