Prof. Dr. Agus Mulyana, M.Hum, chairman of the Central MSI, spoke at a public lecture at Unnes on March 7, 2023. The topic raised at the event was the collective memory of Past Violence in History Textbooks. Another resource person in this activity was Johan Richard Weintre, Ph.D. (Chairman of IIFAS, APIRF), with the topic “Oral interviews in Social Studies culture.