About Rowlatt Act – The Rowlatt Act was passed by the British government to increase their grip on power over the common folk. This law was passed in March 1919 by the Imperial Legislative Council which gave them the power to arrest any person without any trial. To abolish this act , Gandhi and the other leaders called for a Hartal (suspension of work) to show Indians’ objection to this rule, called the Rowlatt Satyagraha. About Jallianwala Bagh massacre – The Jallianwala Bagh massacre ... Rowlatt Act of 1919 & Jallianwala Bagh Massacre were prominent & devastating events in Indian history. Learn more about the act , purpose, features and effects. Rowlatt Act was passed by the British government in 1919 to prevent revolutionary activities by Indians after World War I.