The killings started in October 1965 in Jakarta, spread to Central and Eastern Java and, later, to Bali. Smaller outbreaks occurred in parts of other islands, including
Sumatra. The communal tensions and bitter hatreds that had built up were played upon by the Army leadership, which characterised communists as villains, and many Indonesian civilians took part in the killings. The worst massacres were in Aceh, Central and East Java, and Bali, where PKI support was at its strongest. The situation varied across the country, and the role of the Army has never been fully explained. In some areas, the Army organised, encouraged, trained, and supplied civilian groups and local militias. It was in the earlier stages of the killings that the Army's direct involvement in clashes with the PKI occurred. There was no disguise associated with PKI membership, and most suspects were easy to identify within communities. The
U.S. Embassy in Jakarta supplied the Indonesian military with lists of up to 5,000 suspected communists. Not all victims were PKI members. Often the label "PKI" was used to include anyone to the left of the
Indonesian National Party (PNI). In other cases, victims were suspected or simply alleged communists Most of the victims were not major political figures and were mostly among the poor and the lower middle-class such as farmers, plantation labourers, factory workers, students, teachers, artists, and civil servants. They were often targeted because they or someone they knew, such as a friend or family member, had joined the PKI or an affiliated organisation. Firearms and automatic weapons were used on a limited scale, with most of the killings being carried out with knives, sickles, machetes, swords, ice picks, bamboo spears, iron rods and other makeshift weapons. Corpses were often thrown into rivers, and at one point, officials complained to the Army of congested rivers that run into the city of
Surabaya due to the bodies. In areas such as
Kediri in East Java, Nahdlatul Ulama youth wing (
Ansor Youth Movement) members lined up communists, cut their throats and disposed of the bodies in rivers. Rows of severed penises were often left behind as a reminder to the rest. The killings left whole sections of villages empty, and the houses of victims or the interned were looted and often handed over to the military. She remembers when she saw bodies on her way to school and realized that family members and neighbors who went missing were killed; her mother later told her to ignore it. when there were no more suspects or authorities intervened. Solo residents said that exceptionally high flooding in March 1966 of the
Solo River, considered mystical by the Javanese, signalled the end of the killings. Where there had been communist centres in Central and East Java, Muslim groups portraying themselves as victims of communist aggression justified the killings by evoking the
Madiun Affair of 1948. In
West Java the battalions of Indonesian forces launched the military operations at
Karawang, the operation captured many of the
PKI members and sympathisers. by the investigation of the captured PKI members the Indonesian battalions received an information that the Karawang was prepared by the PKI as the centre of PKI activities at
West Java by the investigation of Gatot Kotjo (Chairman of Pemuda Rakyat), Mas Mira Subahadi (Candidate of Karawang Regent), and Saidi Sugito (Candidate of Headpolice resorts). Meanwhile, PKI weapons during the
30 September Movement were located at
Bekasi Regency.
Bali Mirroring the widening of social divisions across Indonesia in the 1950s and early 1960s, the island of
Bali saw conflict between supporters of the traditional
Balinese caste system and those rejecting these traditional values, particularly the PKI. Communists were publicly accused of working towards destroying the island's culture, religion, and character, and the Balinese, like the Javanese, were urged to destroy the PKI. Government jobs, funds, business advantage and other spoils of office had gone to the communists during the final years of Sukarno's presidency. Disputes over land and tenants' rights led to land seizures and killings when the PKI promoted "unilateral action". As Indonesia's only Hindu-majority island, Bali did not have the Islamic forces involved in Java, and it was upper-caste PNI landlords who instigated the elimination of PKI members. High Hindu priests called for sacrifices to satisfy spirits angered by past sacrilege and social disruption. Like parts of East Java, Bali experienced a state of near
civil war as communists regrouped. In contrast to Central Java, where the Army encouraged people to kill the "Gestapu", Bali's eagerness to kill was so tremendous and spontaneous that, having provided logistic support initially, the Army eventually had to step in to prevent chaos. Sukarno's choice of Bali's provincial governor,
Suteja, was removed from his post and was later accused of planning a communist uprising of Balinese, and his relatives were tracked down and killed. A series of killings similar to those in Central and East Java were led by black-shirted PNI youth. For several months, militia death squads went through villages capturing suspects and taking them away. All the
Chinese shops in the towns of
Singaraja and
Denpasar were destroyed, and many of their owners who were alleged to have financially supported the "Gestapu" killed.
Other islands PKI-organised movements and campaigns against foreign businesses in
Sumatra's plantations provoked quick reprisals against communists following the coup attempt. In
Aceh, as many as 40,000 were killed, part of the possibly 200,000 deaths across Sumatra. The regional revolts of the late 1950s complicated events in Sumatra as many former rebels were forced to affiliate themselves with communist organisations to prove their loyalty to the Indonesian Republic. The quelling of the 1950s revolts and 1965 killings were seen by most Sumatrans as a "Javanese occupation". In
Flores, between 800 and 2,000 people were killed, with an estimated death toll of 3,000 people for the whole province of
East Nusa Tenggara. Local
Catholics were both the main victims and perpetrators of the killings in Flores.
Religious and ethnic factors Islam in Java was divided between
Abangan, who mixed Islam with other religions like
Hinduism and native religious practices, and the
Santri, who followed
Sunni Islam. Many
Abangans were supporters of the Communist Party, and their interests were thus supported by the PKI. They subsequently made up most of the people who were slaughtered in the killings. Abangans were targeted for attacks by Ansor, the youth wing of
Nahdlatul Ulama and the Santri with help from the Indonesian Army. To avoid being classified as atheist and communists, Abangan Muslims were forced by the Indonesian government to convert to Hinduism and
Christianity in the aftermath of the slaughter. Ansor also targeted gender minorities, including the
Bugis third-gender bissu population, deeming their culture to be against Islam. Some
bissu had their heads forcibly shaved, and many were reportedly given the option of conforming to exclusively masculine gender roles or be killed. Ansor decapitated Sanro Makgangke, a
bissu leader in
Bone, and publicly displayed their head as a warning to others. In Sumatra, anti-Javanese Sumatran youths massacred the ethnic
Javanese plantation labourers and PKI members throughout North Sumatra. In
Lombok, natives slaughtered mostly ethnic Balinese all across the region. instead scapegoating Indonesian racism and indulging in extravagant and false claims of hundreds of thousands or millions of Chinese killed. Charles Coppel wrote of the distorted coverage in an article titled: "A genocide that never was: explaining the myth of anti-Chinese massacres in Indonesia, 1965–1966". Coppel sees the same bias in coverage of the
May 1998 riots, where the Volunteer Team for Humanity noted non-Chinese looters made up the majority of those who were killed. His thesis continues to inspire debate, most notably in Jess Melvin's analysis of historical documents she uncovered from Army Archives in Indonesia about the massacres of 1965/66 in the province of Aceh ("the Indonesian genocide files"): "These documents provide the first documentary evidence that systematic race-based killings did occur in Aceh during the genocide. [...] while I agree ethnic Chinese who were murdered in Aceh during the time of public and systematic killings (7 October – 23 December 1965) were killed primarily because of their alleged relationship with the PKI, this does not mean race was absent as a motivating factor behind the violence." An estimate is that around 2,000 Chinese Indonesians were killed (out of a total estimated death toll of between 500,000 and 3 million people), with documented massacres taking place in
Makassar,
Medan and
Lombok island. Robert Cribb and Charles A. Coppel noted that "relatively few" Chinese were actually killed during the purge while most of the dead were native Indonesians. The death toll of the Chinese was in the thousands, while the death toll of native Indonesians was in the hundreds of thousands. Ethnic
Balinese and
Javanese made up the vast majority of people who were massacred. who were later also massacred by the Dayaks. == Deaths and imprisonment ==