@cstross
From my reading of rave/trance histories in germany (much of my favorite music at that time was german/east german during the "fall of the wall" time), West Germans treated easterners very badly, analogous to American "white trash" tropes. I dont know to what degree this was, but it wasn't nothing.
Also in personal experience, around 2010 i was in Berlin for some academic science and tech art events, we were out to dinner with s very mixed international crowd, as is common in that field; i was appalled when local advanced University students referred to "gypsies" in deeply racist and dehumanizing ways. I was shocked at the openness of it. Of course I've heard that and worse here in the US, but not in academic circles.
@freddy @timbray