No, it isn't ignorant, it's history, and pointing to other historical examples of colonialism and imperialism doesn't make modern colonialist states legitimate. Romans lived in the UK over a thousand years ago, but that wouldn't give their descendants in modern Italians the right to occupy the UK, and us native Brits would be well within our right to fight back any invading and occupying force whether the invading and occupying force likes it or not. Muslims, Jews and Christians lived in relative peace in Palestine for almost a thousand years before the British put Israel there.
The British not only didn't put Israel there, they actually fought against the Jews and supported the Arab armies in 1948, after previously restricting Jewish migration during the Holocaust (contributing to many Jewish deaths). Modern Zionism began 30 years before the Brits took control.
