Opposing Israel and supporting the Palestinians is, for some Jews, a way of establishing their left-wing credentials and proving that their political correctness trumps any ethnic solidarity. This

While in Israel there were voices who advocated relinquishing lands so that the two people might live side by side, the PLO was hardly open to compromise. Its attitude to Zionism was explicit in its charter: Zionism is a colonialist movement in its inception, aggressive and expansionist in its goals, racist and segregationist in its configurations

They were “anti-nationalist and anti-religious” and “anti-parochial,” believing that “anything that divides people into separate groups or identities is bad; removing borders and divisions is good.”