(i) Rowlatt Act : The Rowlatt Act was passed by the government despite the united opposition of the Indian members. The act gave enormous powers to the police to arrest any one without any trail. (ii) Rowlatt Satyagraha : Gandhiji decided to launch Rowlatt Satyagraha. Rallies were organised in various cities, workers went on strike, and shops were closed down. Alarmed by the popular upsurge, British government decided to arrest Indian leaders. Local leaders were picked up from Amritsar and Delhi. (iii) Martial Law : Seeing the people’s reaction against the arrest of their leaders police imposed Martial law in Amritsar. On 13th April 1919 General Dyer fired at the people who had gathered in Jallianwala Bagh killing many. People’s Reaction : (a) As the news spread, crowd took to the streets in many north Indian towns. (b) There were strikes, clashes with the police and attack on government buildings.