They try really hard to make the difference de facto as small as possible whilst being loudly theatrical about how "different they are" to make it seem as big as possible.

It's why for example in the US you get loud outrage about some stupid teenagers posting a photo were they spell the N-word, but nowhere the same outrage about kids in poor inner city neighbourhoods not having anywhere the same chances in life as the rest because schools there are shit or having significantly lower life expectation because for poor people food is shit, houses are shit, healthcare is shit, even the mattresses they sleep on are shit - all of which are things which disproportionatelly impact minorities and are the mechanisms via which racism shapes lives and causes suffering 24/7.

Again and again make clown shows of morons being morons (and there are always morons) so as to avoid addressing the actual ways in which people are oppressed because those are all about money and one can't negativelly impact the wealth and what the priviledges it buys, and if there's one thing where both the Fascists and the Marginally-Less-Fascist are exactly the same is making sure the wealthy remain wealthy and can derive maximum priviledges of it, with zero concern for all those who must suffer for it to be so, minority members or otherwise.

At least back when I lived in the UK the Greenparty were the only national party which was Leftwing, though I believe nations other than England did had more mainstream left of center parties.

I was actually a member of the Greenparty until I left the UK following Brexit and at least the people in my local are were trully well intentioned people though quite naive (IMHO). Then again in the UK I worked for almost a decade in Finance - which was pretty much Sociopath-Central - so maybe it was me being significantly more cynical and skeptical than average rather than them being more naive.