"Digital Challenges: Polarized Public Spheres and Disinformation in European Democracies", participation of C. Puschmann in a panel discussion within the event series "Europa: eine Utopie in der Krise? Geistes- und sozialwissenschaftliche Forschung im Dialog [Europe: A Utopia in Crisis? Research in the Humanities and Social Sciences in Dialogue]" organised by Centre Marc Bloch on 7 May 2019 in Berlin.