To me it felt like a lipservice, that didn't make much difference at all. Twice or so someone says "Romani culture isn't like that, this is a perversion of it" (and now that I think of it this still kind of implies that this is somehow descended from it, rather than just a Romani being a serial killer), but the whole episode they *show* us something else, and then aren't even content to let it be a single event, but make it a group thing.