You do know that historically (and like recently as well) white people -- specifically British and British-descended white people -- have been all sorts of racist towards other people we now consider white (but didn't always), including but not limited to, people of Italian, Irish, Jewish, and, yes, Polish heritage?
I find that quite hard to believe, as I don't see any visual distinction between Brits, Ashkenazi Jews, Irish (unless ginger), northern Italians and Poles. Southern nations could be distinguished (e.g. southern Italians, Spaniards, Greeks), in that case it could have been racism (e.g. in the US they still consider "Hispanics" a different race, although I don't).
