The sixth work package investigates far-right adaptations of non-territorial autonomy during the interwar period, closely focusing on the ethno-federalist model developed by the Sudeten German Party. It explores how German minority activists in Czechoslovakia, who were familiar with the pre-war Moravian Compromise, the Austro-Marxists’ writings, as well as with the recommendations of the Congress of European Nationalities, transformed the concept of non-territorial autonomy into a tool for the politics of the far right. The principal aim is to show how and why an originally liberal idea was well capable of being adapted to the language and needs of illiberal or even racist ideologies.