Mahatma Gandhi decided to launch a nationwide satyagraha against the proposed Rowlatt Act:
(i) The Rowlatt Act had been hurriedly passed through the Imperial Legislative Council despite the united opposition of the Indian members
(ii) It gave the government enormous power to repress political activities.
(iii) Allowed detention of political prisoners without trial for two years.
(iv) It was an unjustful law.