The 1984 Anti-Sikh Riots, also known as the 1984 Sikh Massacre, was a series of organised pogroms against Sikhs in India following the assassination of Indira Gandhi by her Sikh bodyguards. Government estimates project that about 2,800 Sikhs were killed in Delhi and 3,350 nationwide, whilst independent sources estimate the number of deaths at about 8,00017,000.The assassination of Indira Gandhi itself had taken place shortly after she had ordered Operation Blue Star, a military action to secure the Harmandir Sahib Sikh temple complex in Amritsar, Punjab, in June 1984. The operation had resulted in a deadly battle with armed Sikh groups who were demanding greater rights and autonomy for Punjab. Sikhs worldwide had criticized the army action and many saw it as an assault on their religion and identity.In the aftermath of the pogroms, the government reported that 20,000 had fled the city; the People's Union for Civil Liberties reported "at least" 1,000 displaced persons. The most-affected regions were the Sikh neighbourhoods of Delhi. Human rights organisations and newspapers across India believed that the massacre was organised. The collusion of political officials connected to the Indian National Congress in the violence and judicial failure to penalise the perpetrators alienated Sikhs and increased support for the Khalistan movement. The Akal Takht, Sikhism's governing body, considers the killings a genocide.In 2011, Human Rights Watch reported that the Government of India had "yet to prosecute those responsible for the mass killings". According to the 2011 WikiLeaks cable leaks, the United States was convinced of Indian National Congress' complicity in the riots and called it "opportunism" and "hatred" by the Congress government, of Sikhs. Although the U.S. has not identified the riots as genocide, it acknowledged that "grave human rights violations" occurred. In 2011, the burned sites of multiple Sikh killings from 1984, were discovered in Hondh-Chillar and Pataudi areas of Haryana. The Central Bureau of Investigation, the main Indian investigative agency, believes that the violence was organised with support from the Delhi police and some central-government officials.After 34 years of delay, in December 2018, the first high-profile conviction for the 1984 anti-Sikh riots took place with the arrest of Congress leader Sajjan Kumar, who was sentenced to life imprisonment by the Delhi High Court. Very few convictions have taken place in the pending 1984 cases, with only one death penalty conviction for an accused, Yashpal in the case of murdering Sikhs in the Mahipalpur area of Delhi.In 2014, Union Home Minister Rajnath Singh called the 1984 killings of Sikhs a genocide. During a rally in 2019, PM Narendra Modi also referred to the 1984 massacre of Sikhs as a horrendous genocide refuting Congress Partys Sam Pitroda. Again whilst addressing a rally in 2022, PM Narendra Modi referred to these killing as a genocide. In 2017, Ontario Assembly passed a resolution condemning the killings of Sikhs in 1984 as a genocide, which was dismissed as an exaggeration by Indian government. In 2018, Connecticut Assembly passed a resolution that recognised the killings as a genocide. On 7 January 2022, State of New Jersey, USA passed a resolution formally recognizing and condemning the 1984 massacre against Sikhs in India as a genocide as well as acknowledging the subsequent migration of Sikhs from India to the United States.

Indira Priyadarshini Gandhi (Hindi: [ˈɪnd̪ɪɾɑː ˈɡɑːnd̪ʰi] (listen); née Nehru; 19 November 1917 – 31 October 1984) was an Indian politician and a central figure of the Indian National Congress. She was the 3rd prime minister of India and was also the first and, to date, only female prime minister of India. Gandhi was the daughter of Jawaharlal Nehru, the 1st prime minister of India. She served as prime minister from January 1966 to March 1977 and again from January 1980 until her assassination in October 1984, making her the second longest-serving Indian prime minister after her father.

During Nehru's premiership from 1947 to 1964, Gandhi was considered a key assistant and accompanied him on his numerous foreign trips. She was elected president of the Indian National Congress in 1959. Upon her father's death in 1964, she was appointed as a member of the Rajya Sabha (upper house) and became a member of Lal Bahadur Shastri's cabinet as Minister of Information and Broadcasting. In the Congress Party's parliamentary leadership election held in early 1966 (upon the death of Shastri), she defeated her rival Morarji Desai to become leader, and thus succeeded Shastri, after his death, as Prime Minister of India.

As prime minister, Gandhi was known for her political intransigency and unprecedented centralisation of power. She went to war with Pakistan in support of the independence movement and war of independence in East Pakistan, which resulted in an Indian victory and the creation of Bangladesh, as well as increasing India's influence to the point where it became the sole regional power of South Asia. Citing separatist tendencies, and in response to a call for revolution, Gandhi instituted a state of emergency from 1975 to 1977 where basic civil liberties were suspended and the press was censored. Widespread atrocities were carried out during the emergency. In 1980, she returned to power after free and fair elections. After Gandhi ordered military action in the Golden Temple in Operation Blue Star, her own bodyguards and Sikh nationalists assassinated her on 31 October 1984.

In 1999, Indira Gandhi was named "Woman of the Millennium" in an online poll organised by the BBC. In 2020, Gandhi was named by Time magazine among the world's 100 powerful women who defined the last century.