"Well-integrated" isn't quite right. Slavic minorities are treated horribly by most Western Europeans (and Americans too). Historically, you'd go West, make money, and come back. Or if your country was bad enough, you'd go West, accept mistreatment, and stay.

They're well-integrated in the sense of "keeping your head down and not causing any trouble." If you cause trouble, you're liable to be deported, lose your job, or have other consequences.

Tolerance for foreigners has gone down in the past two decades by quite a lot. There's a perception the current culture wars have helped, but for most immigrants, they've done the opposite.