I think it depends on who we are talking about and the context. For example, while Pope Pius X refused to support Zionism in 1904 he did say, “The Jewish religion was the foundation of our own;” and then later on he said “I have always been on good terms with Jews.”
I think those people who spout gratuitous hatred against the Jews.
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Not supporting for Zionism in the late 19th and early 20th century was not an indication of anti-Semitism, especially in Western/central Europe and the United States. Many Jews at that time opposed Zionism. They believed that full integration into society was finally possible, and Zionist movements hurt that cause. Strong Zionist support often came from eastern Europe and Russia, where anti-Semitism was very strong at the time. But in the “enlightened” countries, there was no need for Zionism.
This all changed as a result of the Dreyfus affair, where it was realized that anti-Semitism was still strong, even among modern intellectuals in the most enlightened of countries. But that change took time, even among the Jews.