A massacre of course !

Between October 1965 and March 1966, members and supporters of Indonesia’s Communist Party (PKI), the third largest in the world at the time, were hunted down and murdered. Historian Robert Cribb estimates 200,000 to 800,000 people were killed.

https://theconversation.com/how-indonesias-1965-1966-anti-communist-purge-remade-a-nation-and-the-world-48243

Sorry, I am not a communist. 😅