BP Sah is keenly supporting Dalit movement, Special Madheshi Dalit. He actively participated in every Dalit movement from 2020. During this time, many Dalit people were killed and Dalit women were raped across the nation.
He even joined the protest from his village when Sambhu Sada, was killed by Nepal police in the Custody. He formed a group including various social worker, activists and published the fact-finding report based on the study.
Raju Sada died in Provincial Hospital Janakpur due to medical negligence. Sah had even participated in mass protest and programs. He was arrested from the mass protest held in Janakpur 2 July 2020. He has handled and supported the Dalit women who were raped in his region.
He is working on social reform movement influenced by Dr Baha Saheb Bhim Rao Ambedkar.