He started politics to end the 104-year-rule of the Rana Dynasty. During the political movement of 1950 to overthrow the Rana autocracy, initiated by the Bairgania Conference of the Nepali Congress on 26–27 September 1950 (Ashvin 10-11, 2007 BS), he was in charge of armed group Congress Mukti Sena fighting in Gorkha district. This armed struggle was initiated by the Nepali Congress, of which he was founding member. The armed revolution by the Nepali Congress was supported by King Tribhuvan, who was in exile, and by Indian and Burmese socialists. The armed revolution ultimately brought an end to the 104-year-rule of the Rana Dynasty on February 18, 1951 (Falgun 7, 2007 BS). This day is celebrated as Democracy Day and is a public holiday in Nepal.