The Rashtriya Swayamsevak Sangh ( (); , raːʂˈʈriːj(ə) swəjəmˈseːʋək səŋɡɦ, National Volunteer Organisation) is an Indian right-wing, Hindu nationalist volunteer paramilitary organisation. It is the progenitor and leader of a large body of organisations called the Sangh Parivar (Hindi for "Sangh family"), which has developed a presence in all facets of Indian society and includes the Bharatiya Janata Party, the ruling political party under the Prime Minister Narendra Modi. The present Sarsanghchalak of the RSS is Mohan Bhagwat.
Founded on 27 September 1925, the initial impetus of the organisation was to provide character training and instill "Hindu discipline" in order to unite the Hindu community and establish a Hindu Rashtra (Hindu nation). Drawing its inspiration from European fascist movements and groups such as the Italian Fascist Party, the organisation aims to spread the ideology of Hindutva to "strengthen" the Hindu community and promotes an ideal of upholding an Indian culture and its civilizational values.
During the colonial period, the RSS collaborated with the British Raj and played no role in the Indian independence movement. After independence, it grew into an influential Hindu nationalist umbrella organisation, spawning several affiliated organisations that established numerous schools, charities, and clubs to spread its ideological beliefs. It was banned in 1947 for 4 days, and then thrice by the post-independence Indian government, first in 1948 when Nathuram Godse, an erstwhile member of RSS, assassinated Mahatma Gandhi; then during The Emergency (1975–1977); and for a third time after the demolition of Babri Masjid in 1992.
RSS was founded in 1925 by Keshav Baliram Hedgewar, a doctor in the city of Nagpur, British India.
Hedgewar was a political protege of B. S. Moonje, a Tilakite Congressman, Hindu Mahasabha politician and social activist from Nagpur. Moonje had sent Hedgewar to Calcutta to pursue his medical studies and to learn combat techniques from the secret revolutionary societies of the Bengalis.