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In the mid-1960s the Indonesian government led a massive anti-communist purge that saw an estimated 500,000 to one million people indiscriminately killed. Newly declassified documents show that United States officials were very much aware of the massacres and sought to suppress wider knowledge of them. Rebecca Henschke is the ³ÉÈË¿ìÊÖ's Indonesian editor.

(Photo: Indonesian troops fire on communists following a failed coup in Jakarta. Credit: Carol Goldstein/Keystone/Getty Images)