Yeah, that's true. But this is the kind of crisis situation where some kids will kind of "invent" their own racism. This does not necessarily come from kids overhearing parents actually being racist. A lot of these parents are very opposed to racism and would be horrified if they heard what their kids said. Most of them are libs with a general attitude of trying to stay woke, but some of these parents are actual socialists. Like, not social democrats - which this country is full of - but really opposed to capitalism as a system. The kids have just heard a lot of bad stuff about Russia recently, because Russia has done bad stuff. And because they know exactly one Russian person, she is Russia to them. That would not bother her in the least if it wasn't for the fact that her son's classmates have also heard a lot of bad stuff about Russia, and also know exactly one Russian.

There is of course also the kind of veiled racism in adults you're talking about rubbing off on children who don't know how to veil it, but that was already a thing and any school staff with any kind of minority roots has a long established system for dealing with it already. This is not just that getting worse, though that is for sure getting worse too.