The objective of this thesis is to study the transmission of a catastrophical traumatic event, the Shoah being taken as paradigmatic. Under the light of Freudian theory and with the regard of some authors of other areas, which tackled the subject, it is supported that traumatic events of such magnitude generally fall in zones of silence, producing serious sequels. The consequences of the trauma then remain active, with the transmission of psychological pathologies to successive generations. The concepts enhanced here allow for a better visibility of the way the intergenerational transmission of trauma operates. Researches developed on the basis of testimonies by Shoah survivors and their descendants, point to the necessity of considering these studies as fundamental to the treatment of survivors from collective catastrophic events, aiming to develop means to avoid the traumatic repetition. The interdisciplinary study of these questions brings an important contribution to the understanding of violence and its effects and the treatment of its sequels. The conclusions aim to offer a contribution to the necessary and urgent effort to counter fight, as much as possible, the destructive violence that threatens civilization itself.