This site has some troubling articles about Zionism. This gives me a pause, to put it mildly, in relation to how to view its content in general. See:

• 'Are you a Zionist?'

• Liberal Jews are reclaiming their Zionism

The way I see things, it's Jewish Voice for Peace, the largest anti-Zionist Jewish organization in the world, that has a sound approach on the matter. See:

Our Approach to Zionism

Jewish Voice for Peace is guided by a vision of justice, equality and freedom for all people. We unequivocally oppose Zionism because it is counter to those ideals.

While it had many strains historically, the Zionism that took hold and stands today is a settler-colonial movement, establishing an apartheid state where Jews have more rights than others. Our own history teaches us how dangerous this can be.

Zionism is a form of Jewish nationalism,