This article applies the concept of negationism—from a French basis—to an analysis of the activities and discourse of groups and individuals who define the state terrorism applied in Argentina between 1975 and 1983 as a "war" against "Marxist subversion," in defense of "Christian and Occidental Civilization." By distorting history and systematically denying the reality of state terrorism, Argentine negationists try to disguise the vindication of state terrorism as a fight for the truth and memory. The article is organized in three parts. A brief review of the origins of this concept and of the negationist current in France is followed by a discussion of the differences between the concepts of revisionism and negationism. The gestation and historical evolution of this current are then analyzed and described; for this purpose, the article deals with some of the principal argumentations and tactics used by the negationists in their media appearances and street ceremonies: books, magazines, courses, conferences, literary gatherings, so-called study groups, Web sites, demonstrations, and public commemorations, claiming a "complete social memory," are employed to instill a revision of Argentina's recent past. Finally, the article deals with the current stage of the evolution of negationist groups.