You don't know your history. Zionism started in the late 19th century as a nationalist and colonialist movement; by 1917 it had already secured the support of the (soon to be) British administration of Palestine for the creation of a Jewish state there; mass immigration was already underway and flooded with hundreds of thousands of colonists a territory that had had almost no Jewish presence for a thousand years or more. Ethnic cleansing of the native population was already in the plans, as shown by the private diaries of the father of Zionism Theodore Herzl.

When in 1948 the UN formulated its partition plan (i.e. the proposal to expropriate the Palestinians of half of their land to give it to the Jewish immigrants), the land that the proposal assigned to the Jewish state had a 45% Palestinian population, which the newborn state immediately proceeded to ethnically cleanse. Besides, Israel never formally accepted the borders of the partition plan and immediately set to conquer new territory (plan Dalet).