Post-independence
Prime Minister Jawaharlal Nehru inducted him in the Interim Central Government as a Minister for Industry and Supply. Mookerjee was widely respected by many Indians and also by members of the Indian National Congress, and Sardar Vallabhbhai Patel, one of its chief leaders.
But on issue of the 1950 Delhi Pact] with Pakistani Prime Minister Liaqat Ali Khan, Dr.Mookerjee resigned from the Cabinet on 6 April 1950. Mookerjee was firmly against Nehru's invitation to the Pakistani PM, and their joint pact to establish minority commissions and guarantee minority rights in both countries. He wanted to hold Pakistan directly responsible for the terrible influx of millions of Hindu refugees from East Pakistan, who had left the state fearing religious suppression and violence aided by the state. Mookerjee considered Nehru's actions as appeasement, and was hailed as a hero by the people of West Bengal.
Dr. Syama Prasad Mookerjee founded the Bharatiya Jana Sangh (BJS) on 21 October 1951, following his parting ways with Nehru. The BJS was ideologically close to the Rashtriya Swayamsevak Sangh (RSS) and widely considered the political arm of Hindu Nationalism. It was opposed to appeasement of India's Muslims, and favoured free-market economics as opposed to the socialist policies pursued by Nehru. The BJS also favored a uniform civil code governing personal law matters for both Hindus and Muslims, wanted to ban cow slaughter and end the special status given to the Muslim-majority state of Jammu and Kashmir. The BJS founded the Hindutva agenda which became the wider political expression of India's Hindu majority. He was also influential with the more conservative members within the Congress.
In the 1952 general elections to the Parliament of India, Dr. Mookerjee and the BJS won three seats.
Dr.Syama Prasad Mookerjee opposed the Indian National Congress's decision to grant Kashmir a special status with its own flag and Prime Minister. According to Congress's decision, no one, including the President of India could enter into Kashmir without the permission of Kashmir's Prime Minister. In opposition to this decision, he once said "Ek desh mein do Vidhan, do Pradhan aur Do Nishan nahi challenge" (A single country can't have two constitutions, two prime ministers, and two National Emblems).
Dr. Mookerjee went to visit Kashmir in 1953, and observed a hunger strike to protest the law that prohibited Indian citizens from settling in a state within their own country and mandated that they carry ID cards. He was arrested on 11 May while crossing border into Kashmir. Although the ID card rule was revoked owing to his efforts, he died as detenu on 23 June 1953 under mysterious circumstances.
Read more about this topic: Syama Prasad Mookerjee