Do the circumstances in which your parents/grandparents migrated have any weight?

I would guess not, but don't really know. We don't go back to the Pilgrims. I'm not up on family history, and there really isn't anyone to fill me in.

However, that argument doesn't really carry any weight. It could be applied to the first three groups I listed, and none of them can reasonably expect to recover the land. In the case of the Israelis and Palestinians, BOTH can make that claim at the same time. In fact, their claims would be much more recent (1948, I think). But Israel, realistically, isn't going to give the land back. Albaby thinks they aren't getting ANY back (i.e. no two-state solution).

Shooting people, persecuting them, blowing them up isn't going to change that. The first three groups I listed aren't doing that, either. Their situations are not great, but there isn't any killing go on, and they are more or less free to move about the land their ancestors used to claim. But the invaders aren't leaving ever.