Since before WW2 when the Israeli nation didn't exist? (Yes, I'm aware of the historical context of "Israel", but the nation as we know it today didn't exist until 1948).

It ramped up drastically only a few decades before, but yes, Revisionist Zionism is a religious extremist movement that spent and still is spending a lot of effort and money to justify the existence of their own exclusive country that never existed in the shape they claimed it to be. (Which is the area of Palestine AND Jordan. I drew this conclusion largely from reading too much Wikipedia)

Now that it exists though, I'm afraid we must accept that and work with the new status quo. We can't just displace or kill a couple of thousands people for historic justice, right?

Edit: Downvote me, I'm endlessly pissed over the hypocrisy of my own country on the matter.

Can you clarify what “evidence” your link provides? And what exactly are you suggesting “has been going on”?

Your claim is vague and spooky. Please clarify what you think “they” have been doing.