His own foul temper? I some modern examples antisemtism from official Catholicdom.:
1942-1945 Cardinal Adolf Bertram, Archbishop of Breslau and head of the German Bishops' Conference, opposes all public protest against the deportation and massacre of the Jews. He maintains a cordial relationship with Hitler, and in May 1945 he orders requiem masses for Hitler be offered in all his parishes
1943 At their annual meeting in Fulda, the German Catholic bishops debate whether to speak out about the Holocaust and confront Hitler with a direct accusation. They decide not to do so
1943 Slovakia's Catholic Bishops protest the deportation of Jews in a pastoral letter read in Latin from the pulpits. Many priests refuse to read it or insert their own negative comments
1945 Addressing the College of Cardinals after the end of the European war, Pope Pius XII speaks of the hundreds of priests and religious who died in Nazi concentration camps, but makes no mention of the Jews
And yet the correct answer is still "his foul temper."