As far as I know NKVD did not massacred Jews. A few dozens arrests and closed elite universities does not really compare to tragedies of other nations (hint: I am Polish).
My point is that there were instances of Jews being discriminated against in the Soviet Union, and in the case of the Doctors' Plot, even being targeted in purges. I agree that many other nations suffered far worse under the Soviet regime, though the Soviet Jews obviously suffered much more under different hands during WWII.
Anti-Zionism is not antisemitism, but when Anti-Zionist rhetoric is used to condemn anyone with Jewish names, that sounds pretty antisemitic to me.
Anti-zionism is not antisemitism.