The aim of this article is to revisit some of Louis Althusser’s texts from the 1970s and 1980s in order to examine the relation between Althusser’s conceptualization of a materialism of the encounter and his calls for a new practice of politics as part of a strategy for communism. In particular, I try to discuss Althusser’s reference to political practice and the organizational forms associated with it, at the same time attempting to stress the tensions and aporias running through these interventions