Now Catholics have a Bishop whose blog, Dinoscopus, actually provides a Biblical basis for anti-Semitism. As the good shepherd explains to his flock, he's just opposed to godless communism. He really wants to help Jews.
"Now ever since the Jews were responsible for the crucifying of Our Lord Jesus Christ -- "His blood be upon us and upon our children", Mt.XXVII,25 -- they have as a race and as a religion, always with noble exceptions, continued to reject him down to our day. Thus St. Paul observed that they not only "killed the Lord Jesus and the prophets", but they also prohibited St. Paul himself from "speaking to the Gentiles so as to save them". In brief, their behavior was such that "they please not God and are adversaries to men" (I Thess. II,14-16). Closer to our own time, it is a matter of historical record that the designing and launching of, for instance, Communism, to wrest mankind away from God and to replace his Heaven with a man-made paradise, was largely their achievement.
"So they persecuted St. Paul at every turn (see Acts of the Apostles) as being one of their arch-enemies, when in fact nobody loved them more truly or labored more for their real well-being than did St. Paul (cf. Rom. IX,1-5). Similarly today, they will call an "anti-semite" anybody who gets in the way of any godlessness of theirs, when in fact all people laboring for their salvation, as for the salvation of Gentiles, are their best friends. St Paul, pray for us ! Kyrie eleison."
Nobody Expects the Spanish Inquisition!