She took part in the 24 days Dandi March in 1930 which was an act of non-violent, civil disobedience in colonial India. In 1941, she, along with Sucheta Kriplani started individual satyagraha for which both of them were eventually arrested. Banerji was again arrested in 1942 for taking part in the Quit India movement. She had to take her B.A. exams from prison.