Linus is a Finn. They have their own bloody history with Russian occupation. I can see how that would run deep. It certainly does, and rightfully so, in Finnish culture as a whole.
So it's fine to be a racist if you hold historical grievances?
Let me give you a clue: a Fin has no high moral ground when it comes to WWII, they were Nazi allies that had "work camps" where the death toll was on par with some Nazi death camps.