Latvia, the apartheid state where ethnic russians have “non citizen passports” and are treated like second class, has just adopted a law allowing anyone who supports Russia and has dual citizenship with another country to be stripped of their latvian citizenship and thus deported if they live in Latvia. Yes the law says “support for war crimes”, but Latvia has already said that supporting Russia equals “supporting war crimes”. Nazism is returning comrades.
Only if those people do not have secondary citizenship and doing so would make them stateless. If they had dual citizenship with another nation, it is within the bounds of law.