The idea that discussing Zionism is a sign of an anti-semite is a shit take. The Zionist movement worked very hard to establish a colony in the middle east, in an area where they knew there were already natives and those natives were hostile to being colonized. It’s impossible to truly study the founding of Israel without learning about the Zionist movement.
This isn’t about religion, or even very much about race. It’s about the powerful asserting their will over the powerless. To some extent you could argue that the Zionists were used by the British to screw over the Arabs, but that doesn’t make the Zionists innocent.
Equating discussions of Zionism with anti-Semitism is part of the Israeli propaganda playbook for dismissing all criticism of Israel’s founding.