 From 1978, he was lecturer in Church History at the training centre of the Eastern Region of the then divided Evangelical Church in Berlin-Brandenburg in East Berlin.Protected by the Protestant Church in East Germany, opposition movements against the regime in the GDR formed and in 1987 Wolfgang Ullman became a member of one of these group, the “Initiative for the Refusal of Practice and Principle of the Demarcation”.After German reunification in 1990 he was a member of parliament (Bundestag) and from 1994 to 1998 a member of the European Parliament for Alliance '90/The Greens.