Excerpts from Books and Wikipedia
"Beant Singh and Satwant Singh, the two man who gunned down India's prime minister, Indira Gandhi, were members of her own body guard. As Sikhs, they had been outraged when Gandhi had authorized the storming of their most sacred shrine, the Golden Temple of Amritsar, the previous June. . . . It added a new level of bitterness to the Sikh separatist struggle." [Furtado: 1001 Days]