Violence among youngsters is a major public health concern in western society. Detecting the causes of this phenomenon is crucial for developing effective interventions to curtail violence in children and adolescents. In this chapter we explore the interaction between two possible factors in the development of youth violence. The exposure to traumatic experiences, the first factor, has been shown to create difficulties in the regulation of emotions, and, among others, of anger. Immigration, another factor, might lead to violence because of the social difficulties of the immigrants' experience. In this chapter we maintain that one of the precipitating factors that can lead to youth violence among immigrants might be the exposure to traumatic experiences, prior to or in the process of immigration, and the resulting post traumatic distress.