"Supposed to"?
Just read a book by an unbiased historian to know the truth of the situation and make up your own mind.
Ilan Pappé is an Israeli historian. Maybe read something by him?
I just dug a little into basic history and learnt that the Romans drove the Jews out a long time ago. Then around and after ww1, the Jewish diaspora created the Zionist movement, which was materialised during and right at the end of ww2, displacing Palestinians to camps in the outskirts of their bordering arab countries.
The anger of the displaced people led to the emergence of Guerilla groups. And these Guerilla groups then started retaliatory strikes to try get their land back, and the whole Palestinian nation shamed for it by the Zionists and the US.
Then over the decades emerged videos of Israeli settlers taking over Palestinian homes overnight. These are well documented in video form as well and can be found on YouTube. These videos were never or rarely covered by western news channels even though they were recorded by western journalists and camera crew, many of those that even died in the conflicts.
The traditional Jewish diaspora does not support the Zionist movement, and you will see many protests in the US by them against the actions of Natenyahu.
I do have a few books on my to read list, including the one by ilan pappe. And another on the 6 day war. Actually 2 on the 6 day war. Both with differing view points.
