Madhav Sadashivrao Golwalkar, popularly known as Guruji, was an Indian politician and political figure who served as the second Sarsanghchalak of the right-wing Hindutva paramilitary organisation Rashtriya Swayamsevak Sangh. From Wikipedia
Modi's first visit as Prime Minister to the RSS headquarters in Nagpur emphasized cultural nationalism, social justice, and strategic reconciliation with the Sangh.