Anti-Zionism is simply a coded attack on Jews, shrouded in politics and politically correct language.
Anyone with an accurate understanding of anti-Semitism and anti-Zionism as concepts will understand they are different. One is bigotry, one is a political difference of opinion.
There are plenty of Jews in the Jewish community that are anti-Zionists.Surely they cannot be accused of being anti-Semitic?
Arguments against anti-Zionism are rooted in international law and human rights. Anti-Semitic arguments are rooted in bigotry and hate.