In reply to Misha:
> I'm not saying that what Israel is doing is right, there is too much oppression and brutality, but I do think that denying Israel the right to exist and expecting most of its population to go somewhere else is ridiculous.
And yet this is what happened to all colonists who had occupied other countries in the 19th century, ie. far longer than the zionists. When Algeria and so on gained their independence French settlers left, that is what decolonization is about. In the case of Palestine it is even clearer as when most of the Jewish colonisers/settlers arrive the notion of colonization was already a thing of the past in most of the world, so your "arguments", again the same old zionist ones, don't hold.
> That is where their ancestors lived.
This is very debatable, most descended from converts to Judaism many centuries ago outside Palestine so their only relation to Palestine is that their religion is the same as that of some of the people who lived in Palestine for a few centuries 2000 years ago. The real descendants of the inhabitants of the area now called Palestine 2000 years ago are the present day Palestinian Arabs. This is the opinion of Uri Averny mentioned above, it was even the opinion of Ben Gurion in his youth. There is an interesting book on the subject called "The Myth of the Jewish People" written by a professor at Tel Aviv University called Shlomo Sand:
http://www.amazon.com/Invention-Jewish-People-Shlomo-Sand/dp/1844676234
The basis of zionism, the dispersion of the Jewish people in Roman times is just a myth.
Judaism in Roman times, like another Jewish sect, christianity, was very much an evangelising one, most people who are Jewish today probably descended from these converts... So if you want base your arguments on this sort of thing then once again it's the Palestinians who trump the Israeli Jews*.
I don't think we can go back 2000 years though, the indigenous people of Palestine are those who lived there before the zionist invasion and who had lived in harmony - you can hardly pretend that the arrival of Jewish settlers over the last century has brought harmony to Palestine, nor the whole Middle East for that matter.
*I precise Israeli Jews as, of course, there are may Israeli Arabs who are Palestinians who ended up there after the various wars of conquest.