Open Access

Martin Seeliger, Markus Baum

• In our text, we follow the traces of a (1) paradox, (2) an ambivalence and (3) a dialectic that constitute digitalized public spheres and discuss the resulting tensions in discourseethical and political theoretical perspectives using the blocking of Donald J. Trump’s Twitter account as an example. Starting from this, we determine the conditions of constitution of the digital public sphere and locate the dynamics of its development in the dialectical tension between private and public: The fact that the two other relations of autonomy and heteronomy, intensification and polarization come to such a head is based on an insufficient socialization of all those means of production that produce the current digital public sphere. Using the example of Donald J. Trump’s recently suspended Twitter account and with a view to Habermas’s discourse ethics, we illustrate the extent to which Trump’s partly racist and conspiracy-theoretical post violates discourse ethics Standards and is also highly problematic with regard to the political; however, banishment from a part of the digital public sphere is certainly not an act that should be incumbent on a private company. From this, we conclude that the normative potentials of digital public spheres can only be vol.