German People's Union
Kern was a supporter of the pan-European nationalism that became important in post-war far right politics and was a regular contributor to "Europe-Action", a journal devoted to this ideal controlled by the "Fédération des étudiants nationalistes" of Dominique Venner. Active in German politics, he served as a member of the neo-Nazi Socialist Reich Party, the National Democratic Party of Germany and the German People's Union. As an NPD member he was active in ultimately failed attempts to unite the German far right during the early 1970s. He was also active in the "Deutsches Kulturwerk Europäischen Geistes", a German cultural organisation founded by Herbert Böhme.