This contribution is part of a panel devoted to “Contemporary Political Communication between Populism, Fake News and Post-Truth" The post-truth regime that belongs to our contemporaneity seems to be characterized by the cancellation of the term truth: truth no longer exists. For my part, I would like to say instead that the post-truth era is characterized by a multiplication of truths and a constant reference to this category. The problem, in short, is that everyone claims their position as true. The result is a multiplication of truths, and their privatization. This very problematic phenomenon becomes even more serious in the light of the so-called problem of the “echo chambers”, which creates communities of values and knowledge, interrupting the normal dialectic of knowledges. These developments mark in a particularly worrying way the sphere of political discourse, which should by definition be founded on the idea of "common good" and "trust", but which loses precisely the dimension of "community" and delegation. Every "bubble" (of people, values and knowledge) claims its absoluteness today, keeping itself out of the discursive dynamic of confrontation, of mediation, of negotiation, of delegation - which have been the foundation of political action.