If you think the Jewish people doesn’t a right of self determination in their ancestral homeland, it makes you racist, yes. Every people has that right according to the UN charter. How the Jewish people choose to exercise that right is their choice, and they chose the state of Israel. Denying the Jewish people the right to self determination is racist of course.
Zionism is an umbrella term for a whole bunch of different ideologies. What they have in common is the belief that the Jewish people should exercise its right to self determination in the form of the state of Israel. Many Zionists see this mission already full filled as of 1948.
There’s strong disagreement also inside of Israel and among Zionists what territory is deemed sufficient.