In 1911 Roy joined 'The Panjabi' magazine as editor thereafter become the editor-in-chief of the Tribune magazine published from Lahore. He condemned the atrocities of British police and martial law in his column as well as argued for press liberty. Government accused him for publication of seditious writings. Roy was popular for his fearless, brave articles and known as Kali Babu. Mahatma Gandhi praised Roy's political writings in 1932. Roy and The Tribune published, 1919, leading up to the April 13th massacre of the Indians at the hands of the British in the infamous Jallianwala Bagh massacre. For this Roy was sentenced to rigorous imprisonment for two years along with a fine of one thousand rupees. Lahore based Bengali advocate Sudhir Mukhopadhyay pleaded and defended for him in the Court and people collected money to run the case. Even Rabindranath Tagoretried personally for his release.