RE: 70 years of Nakba, the birth of the last colonial state. Very often the colonial origin of Israel is forgotten, but today it is more important than ever.

But the issue is the history, not from the small snapshot you've decribed from the late 19th century, but take it right back, 2000+ years because this is when the foundations for such divisiveness was formed.
It is sad that the UN won't or is too afraid to step in and help negotiate acceptable borders and boundaries, but until they protaganists remove religion from the discussion, there will never be love and harmony.
Decolonise Isreal? and millions of Jews should go where exactly? Thats just as wicked a suggestion as the evil which happened yesterday