By the early 1980s, the Khalistan movement, led by Sikhs demanding a homeland for themselves within India, had become very active, attracting support from many of the Indian Sikh diaspora in Canada. The movement soon developed into the Punjab insurgency, which polarised the Sikh community in Canada between Khalistani separatists and those supporting continued union with India. The agitation of the Sikhs in general further increased following the Indian Army's 1984 assault on the Harmandar Sahib complex and Akaal Takht, and the assassination of Indian Prime Minister Indira Gandhi by her Sikh bodyguards later that year. This was followed by the bombing of Air India Flight 182 in 1985, which was linked to Canadian Khalistani militants.