Following the attacks of January and November 2015 in Paris, then July 14 in Nice, the Presidency of the French Republic announced in 2018 the creation of the Memorial Museum of Terrorism, and entrusted the historian Henry Rousso with a mission to prefigure the future museum. Henry Rousso is the author of many reference works on the history of the Second World War: Vichy syndrome, Vichy a past that does not pass, but also Facing the pastan essay on contemporary memory…