The paper deals with re-education as one of the hidden symbols of modernity using the example of National Socialist nationality politics. It analyses a theoretical concept behind the National Socialist ethnic and racial policy in East Central Europe, especially in the Protectorate of Bohemia and Moravia. It presents the concept of Umvolkung as a theoretical basis on which it was possible to think of a significant part of the Czech population that met the racist criteria of the National Socialists, that it was originally the German population who lost its national identity during the centuries. The concept should also help to develop a strategy to re-educate the people of the Protectorate, and in the long run it should eventually lead to ethnocide, i. e. to disintegrate or directly destroy the Czech collective national identity.