The purpose of this paper is to present the relational dimension of trauma according to Sándor Ferenczi, illustrating it by using the testimonial material produced during the analysis of Maryan S. Maryan, a visual artist, survivor of Auschwitz. Furthermore, a few formulations are proposed on being witness to traumatic experiences in psychoanalytic practice, as well as what can be considered as ethics and politics in psychoanalysis when facing situations of social trauma and violence.