The paper starts from a phenomenology of violence that reconsiders the phenomenal contours of the seemingly opposed concepts of violence, on the one hand physical violence and on the other hand structural violence. We argue that the implied definiteness of their reciprocal separableness is not given. Instead, violence should be understood as the negation of sociality. As such, it is closely related to a basic form of trust in relation to people's self-awareness, and their relation to others and to the world. It operates as a background assumption that can only be grasped ex negativo. Shattered trust is induced by interpersonal violence. That is why we focus on traumatizing and traumatic experiences and its social implications. We argue that such an analysis is only rarely done within the discipline of sociology and we therefore suggest a systematic heuristic to study the social implications of traumata. Researching those implications in turn helps us to understand the phenomenon of violence and (basic) trust alike.