I lived through this.
One of the reasons we sympathise with the Palestinians so much is we know all the rhetorical tricks used to justify colonialism. We see through them coz they were used here. e.g.
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They claim that there was never such a nation as "Palestine", that the nationalism is a lie. Well we had that here: revisionist historians like Gerald Cambrensis trying to say it was always a unified British Isles.
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They say Palestinians in Israel can vote and are nominally equal. Well then why are Palestinians 21% of Israel but 8% of the Knesset? And we had the same here in Stormont and Westminster: Catholics could vote but they had half the voting-power
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Also the word "terrorist" is a big rhetorical parallel. Most of my life the word "terrorist" meant "Northern Irish"; it was only around 2000±2 that it started to mean "Muslim". And if you're fighting "terrorists" you can do anything