Going back to this, for many they see it as a continuation of the anti-imperialism which has characterised left wing politics for over a century. They see Palestine as a state which has been colonised by Israel, who themselves are a proxy for the USA (which is the only country they hate more than Israel). As ever, there is some truth in this (Israel is almost entirely reliant on the US, for example), coupled with a lot of nonsense.however does trigger a burning question, or observation, why do the unions and left find so much time for the Palestinian cause? of all the causes around the world, this one has so much attention over decades.
It also plays into the thing which most unites the hard left and the hard right in their outlook, that there are “good guys” and “bad guys” (conveniently the good guys are always them and those they agree with). Whereas for most of us, we can see nuance in a,most everything.