What do you mean by the terms zionism and zionist?
MPACUK understand zionism to be a belief in a Jewish State in at least part of Biblical Israel, in which Jews regardless of their place of birth could claim citizenship - this is how the state of Israel currently defines itself. We use the term zionist to describe those who actively support the current Israeli state - its policies and its intrinsic racism. It is completely wrong to suggest that the term zionist is 'code' for Jewish - many Jews, including some Israelis are not zionists, and many zionists are not Jewish.
MPACUK support not only an end to the occupation of the West Bank, Gaza and Jerusalem, but also the Palestinian right of return, and an end to the second-class citizenship of non-Jews within Israel. However the exact details of a political solution to achieve peace and justice is not something we would want to dictate from the outside.
MPACUK support the right of locally born Jews, Christians, Muslims etc to live in peace and security - we are opposed to all forms of ethnic cleansing. In fact Jews, Christians and Muslims lived peacefully alongside each other in Palestine for centuries before the advent of zionism.