Saskia Wieringa is a co-founder and the chair of the Foundation IPT 1965.

Since the early 1980s she has done research on the ‘events of 1965’. She was the first one to uncover and analyse the role sexual slander played in the incitement to mass murder of General Suharto. Members of the progressive women’s organization Gerwani were accused of having seduced and castrated the generals who were abducted by troops of the 30 September movement. The women were also said to have gouged out the eyes of the generals. This was a core part of the propaganda campaign to dehumanize the communist party. Saskia Wieringa co-organized the Tribunal which was held in November 2015 and chaired the research team that compiled the report on which the indictment was based. She has published widely on the Indonesian genocide.

Her major book publications are: