Dilawar Singh's mother, Surjit Kaur, and father, Baba Harnek Singh, live in Guru Nanak Nagar, Patiala, Punjab, India. His father was a government employee. Dilawar Singh had two brothers. His elder brother Chamkaur Singh is a senior financial analyst and revenue official in the Department of Youth Service, Government of India. His younger brother's name is Harvinder Singh.
Assassination of Beant Singh
In Punjab between 1992 and 1995, at a time when the Khalistan movement was active in the state and the Indian government was aggressively seeking to control the movement. It is alleged by some sympathizers and Khalistani activists that, during Beant Singh's tenure, many of radicalized Sikhs were neutralized unlawfully. As per , "Terror reign of Khalistani activists led to a situation where Government under Chief Minister Beant Singh had to permit a situation, however unfortunate, where even subordinate police officers became the judge, jury and executioner of radicalized Sikhs leading to many fake encounters. Misguided Sikhs were picked up from their houses or fields and taken blindfolded to isolated places and told to run. A burst of AK-47 rifle-fire ended their lives." Dilawar Singh, who was a police constable at that time, conspired with Balwant Singh Rajoana, a police officer, to kill Beant Singh. The attack on 31 August 1995 resulted in the death of Beant Singh, Dilawar Singh and 17 others, and, on 25 December 1997, backup police officer Rajoana confessed his involvement while blaming the Indian government that it has murdered its own innocent people and promoted and honored the killers of Sikhs, its Chief Minister Beant Singh had licensed fake encounter killings, rape, abductions, and secret cremations which remains unpunished even today, refused to contest the court proceedings because of his lack of trust in the Indian judicial system, and death penalty was awarded to him.
Awards and afterwards
On 23 March 2012, he was awarded with the title of "National Martyr" by Akal Takhat, the highest temporal seat of the Khalsa. The Khalsa Action Committee, an umbrella organization of several Sikh organizations, honoured the father and mother of Dilawar Singh, Harnek Singh and Surjit Kaur with the Shaheed Baba Deep Singh gold medal at a function in the city ofAmritsar. He was also given the title of 'pride of the nation' by Sikhs.