There is no such thing as anti-zionism. There is zionism and there are zionists.
Those that you label anti-zionist oppose
one or many of the below forms of inequality.
Those that you label anti-zionist are anti-racist; they oppose racism in
every country.
Those that you label anti-zionist condemn
antisemitism since it is a form of racism.
Those that you label anti-zionist condemn the white-supremacy that exists in Israel, North America, UK and Aus.
Those that you label anti-zionist are anti-fascist; they oppose fascism in every country.
Those that you label anti-zionist are anti-apartheid; they oppose apartheid in every country.
Those that you label anti-zionist are anti-settler-colonialism; they oppose settler-colonialism in every country.
Those that you label anti-zionist condemn occupation in every country.
Those that you label anti-zionist condemn genocide in every country.
Those that you label anti-zionist are anti-terrorism; they oppose terrorism in every country.
Those that you label anti-zionist could also be atheist; we don't believe in god so we definitely don't believe a god granted land to anyone, especially anyone who says god said so,
according to the book 'they' wrote.
Those that you label anti-zionist campaign for
equality for all people in all countries, not just in Israel and Palestine.
As you can see, there is no actual movement known as antizionism.
What you think is anti-zionism is simply people from
all walks of life with many different opinions that oppose, condemn or protest against the same unfair practices in every country not just the unfair practices and
discrimination that occurs in Israel/Palestine and against Palestinians.