Kumar was born in
Muzaffarnagar,
Uttar Pradesh and both his parents were freedom fighters. He grew up in Gandhi Ashram,
Meerut, Uttar Pradesh. His father, Prakashbhai Sharma, worked closely with Mahatma Gandhi and Vinoba Bhave. After visiting Dantewada in 1988 with activist
Nirmala Deshpande and his father, he decided to move to Dantewada with his wife in 1992 and founded the Vanvasi Chetna Ashram along with her. The ashram worked to educate the tribals about their legal rights. The ashram was demolished on 17 May 2009 by the police. Over the years, he extensively worked in the
Bastar district with the government to raise awareness on malaria & literacy, and against the government over alleged human rights violations, especially during the
Salwa Judum movement. == Chhattisgarh tribals killing case ==