The whole ZIR = antisemitism argument depends not just on disagreeing about which definition of Zionism is right. It says there are no alternative definitions. In other words, it says nobody in this clip exists (even the pro-Israel guy doesn't deny Zionism is Israel's ideology)
In 1987, the debate over Zionism, racism, and Palestinian rights was already decades old. In 1975, the United Nations General Assembly adopted Resolution 3379, declaring Zionism a form of racism and racial discrimination, a resolution that remained in effect until its repeal in