The biggest ethnicity in the USA is German they are the ones who killed & oppressed Poles.
You do realize, don't you, that our German ancestors came here over 200 years ago, and have since intermarried with Scandinavians, Scots, Irish, English, French, Swiss, Italians, eastern Europeans, Asians, Hispanics, Natives, and Africans? In other words, you would be hard pressed to find very many native-born Americans that are 100% one nationality. BTW, German is a nationality, not an ethnic group.
