What?

let people be racist somewhere

No.

Let them live their miserable life while there is no need to waste resources on making them treat all humans with respect.

Where exactly is that supposed to happen? And how do you envision this working? You want us to enable a state run entirely by people who are racist and violent and give them their own place to do whatever they want? What exactly do you propose we do with the folks who live wherever this is already? Because it seems like in your scenario their choices are leave or live with racist assholes. Have you not even heard of Israel? Or are you just a racist fan of genocide?

However, unlike the North after the war, help those who are stuck with them, to get away.

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