What Did The Church In The 19th Through Mid-20 Centuries Teach About The Jews?

What did the Church in the 19th through mid-20th Centuries teach about the Jews? Did the Popes enforce keeping the Jews in the Roman ghetto? Did the Church keep the anti-Judaic teachings of the past? Was Zionism rejected by the Church? Did the 20th Century Saints and saintly men criticize the Jews?