"because a White Jew living in New York who's background for the past several hundred years' is Polish has a natural right to land..."

As do black Jews from Ethiopia, or brown Jews from Morocco or Iraq, or Jews of any color, nationality or ethnicity. So white supremacist? No.

Taking someone's land is a terrible thing, but being murdered is worse. Jews took the land to avoid being murdered. That being said, they made a lot mistakes vis a vis the indigenous people & continue to do so. I won't try to excuse their excesses.

But the basic idea?

When Adolf Eichmann sent Joel Brand with an offer to rescue 100,000 Hungarian Jews in exchange for trucks he was arrested by British authorities upon entering Iraq & held incommunicado for several months. "Whatever will we do with so many Jews?" one Englishman asked Brand (some claim it was High Commissioner, Lord Moyne, but I doubt this). Point being, Brand was prevented from even presenting the idea or entering into negotiations to at least delay the transports because there was no where to put the refugees. Better to let them be murdered.