Samaj Ko Badal Dalo is a 1970 Bollywood drama film directed by V. Madhusudhan Rao. The film stars Ajay Sahni, Sharada, Pran, Kanhaiyalal, Prem Chopra, Mukri, Kanchana, Dhumal, Aruna Irani. It is the Hindi version of the Telugu film Manushulu Marali, which is a remake of the Malayalam movie, Thulabharam 1968 by A. Vincent.
Source: Wikipedia