This article deals with the deep transformations of the commemorative practices due to the digital technologies. It focuses on a case study related to the online commemoration of the Piazza Fontana terroristic attack (December 12 1969, Milan) which took place on December 12 2020 during the pandemia, 51 years after the tragical event. The results here illustrated represent the last part of a long research on the public memory of this case.
Keywords: online commemoration, public memory, terrorism, digital technologies, cultural trauma.