In 1932, he created the Breton National Party (PNB), a nationalist and separatist Breton movement that would be outlawed by Prime Minister Édouard Daladier in October 1939, for its connections with Nazi Germany. In an article he contributed to the 11 December 1932 "Breiz Atao", Mordrel launched an anti-semitic attack, one aiming to add National-socialist rhetoric to his discourse against French centralism: ""Jacobin rime avec Youppin"" - translatable as "Jacobin rhymes with Yid". The same year, he conceived the Strollad Ar Gelted Adsavet (SAGA, "Party of Risen Celts") and its Nazi-like platform - which included Bretons in the Nordic "master race".