The German-Egyptian writer Hamed Abdel-Samad, who currently works as a researcher at the Institute of Jewish History and Culture at the University of Munich, is the son of an orthodox imam. As a young man he was active in the Muslim Brotherhood, and knows large parts of the Quran by heart. In 1995 he settled in Germany, where he studied Islamology at the University of Erfurt.
He has written several Islam-critical books, and in 2013 he received a fatwa. The following year, in 2014, he published the book "Der Islamische Faschismus - eine Analysis", wherein he also describes the Islamic state's ideology. See his speech here.