Nazism has initiated systematization of terror in the Jewish genocide: violences on citizens, mutilations, disintegration of corpses, disparition of mortal remains. Terrorists develop total terror strategy too, adding to the victims of the attacks (wounded and deads), those of the traumatism (survivors and bereaved). They are not only killing people but they are organizing horror through violence, aleatory death and guiltlessness of victims. This hypothesis is verified by the importance of post-traumatic grieves. The lack of corpses or their destruction prevents essential stages of grief work: the awareness of reality then the acceptance of loss. Can only revange come into view of so much pain? Is’nt it the principal threat of terrorism: to develop the mortifying spiral of a position war based on retaliation?