Bundism wasn’t created to oppose Zionism; it was created as a solution to the very same crushing oppression faced by European Jews of the time that Zionism was created to solve.
The word “diaspora” was originally coined for the scattering of Jews from Eretz Yisroel, and later extended to any other group of people living away from some point of origin. Now we have a strong tendency for certain leftists to act like this original diaspora was a myth or a lie.
The resurgence of the Jewish left is a great opportunity to shed the antisemitism of the broader left, but only if it such antisemitism isn’t imposed from within.
There are many people who argue that Jews are nothing more than a religion; that the Jews may have been a people in ancient times, but are not anymore. This demonstrates either ignorance or omission of the opinions of actual ancient Jews as transmitted through stories such as that of Ruth.
This list of resources on antisemitism was compiled when a German comrade asked me for resources to help them distinguish antisemitism from anti-Zionism.