I mean to be fair... groups that consider themselves far left also exterminate groups

[Citation needed]

The trick is to not go too far

Yeah, you wouldn't want society to become TOO egalitarian and fair! 🙄

You wanna end up at Scandinavian liberal socialism

Speaking as an actual Scandinavian leftie: nope. Not good enough.

Social Democratic Liberalism (which is what it actually is. Socialism is a very different thing) is still capitalist and thus exploitative at its core.

It's better than most, but it's far from the utopian ideal that people from the American Left tend to think it is.

but not overshoot it to let's create a famine for kicks and kill all people wearing glasses

You're thinking along the wrong axis there. There's a HUGE difference between ultra authoritarian leftism like that of the USSR and Pol Pot's Cambodia, and libertarian (original meaning, not bastardized American definition) leftism.