The beginnings of an answer lie in the secret Israel has known, and suppressed, all these years. Even now, can we describe what happened 60 years ago honestly and unhysterically? The Jews who arrived in Palestine throughout the twentieth century did not come because they were cruel people who wanted to snuffle out Arabs to persecute. No: they came because they were running for their lives from a genocidal European anti-Semitism that was soon to slaughter six million of their sisters and their sons.
They convinced themselves that Palestine was "a land without people for a people without land". I desperately wish this dream had been true. You can see traces of what might have been in Tel Aviv, a city that really was built on empty sand dunes. But most of Palestine was not empty. It was already inhabited by people who loved the land, and saw it as theirs. They were completely innocent of the long, hellish crimes against the Jews.