sentences:  An exile from the Nazi regime, deeply concerned with the lessons offered by the Weimar Republic, he taught at the New School for Social Research and then at the City College of the City University of New York until his death in 1980.Born in 1907 in Berlin, Pachter joined the German Youth Movement as a teenager and, following a split in its ranks, the German Communist Party (KPD) in 1926.He enrolled in the history department at the University of Berlin and, by 1928, found himself expelled from the KPD.