- Harijan Sevak Sangh was founded by Mahatma Gandhi in 1932 after the attempt by the British(on the request of Dr.B.R.Ambedkar) to grant separate electorate to Harijans.
- Its aim was to eradicate the untouchability and caste discrimination in India.
- GD Birla was its founding President.
- It played a major role in Temple Entry Movement of Travancore princely state.