In 1919, he and other Sikh leaders was arrested for anti-Government protests following the
Jallianwala Bagh massacre. He also played an important role in the SGPC's takeover of the
Harmandir Sahib (Golden Temple), the holiest shrine of the Sikhs. He further helped the Akalis seize the control of
Gurdwara Panja Sahib (
Hasan Abdal, November 1920), Gurdwara Sacha Sauda (Chuhar Kana, December 1920),
Gurdwara Sri Tarn Taran Sahib (January 1921) and
Gurdwara Guru ka Bagh (near Amritsar, January 1921). In 1921, Kartar Singh was arrested for protesting against the
Nankana massacre, and again in 1924 for taking part in various
Akali movement demonstrations. He was released in December 1928, because of poor health. He and his associates were involved in securing for SGPC the possession of properties attached to various gurdwaras, in accordance with the
Sikh Gurdwaras Act, 1925. == Later life and death ==