Palestinians are taking Europe from us?
Nigga, our own politicians are selling it away to corporations who want cheap labor. That is the impetus behind immigration, and explains even the willingness to take refugees, since it's presupposed that they might contribute to the economy one day (whether or not this is actually true in the end).
Interestingly, while it can be said that the British Empire was allowing Jewish immigration into Palestine, Zionist groups were breaking the law and sneaking in as many Jews into Palestine as possible. So Jewish immigration to Palestine could be legitimately called an "invasion," since a lot of it was illegal even under British occupation law.
The closest equivalent is illegal immigration into America, which is justified for economic reasons ("they work the jerbs the white goyim don't want to do").
But yeah, Palestinians will only be taking Europe from us if Israel succeeds in genociding them and creating a refugee crisis which the West will bear the brunt of.