Mahatma Gandhi launched the Rowlatt Satyagraha due to following reasons :
(i) The Rowlatt Act was an openly undemocratic measure taken by the British government. It sanctioned the detention of Indian political leaders without any trial for a period of upto two years.
(ii) The law was passed in an autocratic fashion without considering the opinion of the Indian population which was going to be affected by it.
(iii) Gandhiji latched on the issue of Rowlatt Act because it had become an emotive political issue and had the potential to unite the Indians against a common enemy.
Organization of Satyagraha
(i) Mahatma Gandhi wanted non-violent civil disobedience against such unjust laws, which would start with a hartal on 6 April.
(ii) Rallies were organised in various cities. Workers went on strike in railway workshops and shops closed down.
(iii) Local leaders were picked up from Amritsar, and Mahatma Gandhi was banned from entering Delhi.