One slight error. For years the assumption was that ordinary Germans were turned into virulent antisemites by propaganda. However, some year ago, a researcher determined that the anti-Jewish propaganda was “singing to the choir”, that ordinary Germans were already antisemitic.
This makes sense in retrospect of European history.
https://en.wikipedia.org/wiki/History_of_the_Jews_in_Europe#19th_century
Zionism, as a movement, did not spontaneously appear. After centuries of hatred, the tipping point for many Jews was the Dreyfus Affair (1894), which brought out such profound overt antisemitism in European nations even beyond France, that it was impossible to ignore.
Anti-Semitism has a long and deep history across Europe.