After the war the British made the rules more stringent. They passed the RollatAct. This was opposed by the people. Many of the leaders were put in the jails. On 13th April, 1919, it was a Baisakhi day. Thousands of people had gathered in Jallianwala Bagh at Amritsar. They were holding a conference. They wanted their leaders to be released from jail. A British army officer, General Dyer surrounded the only gate which led to this garden and ordered his men to fire on the innocent, unarmed people. They continued the fire till their bullets were exhausted. Hundreds of men, women and children were killed and thousands were wounded. The news of this brutal cruelty spread throughout the country. The people were greatly shocked.
With the joining of Mohan Das Karam Chand Gandhi in the Congress fold, the Congress became a mass movement. Gandhiji gave a new turn to the Freedom Movement. He believed in truth and non-violence. This movement was called Satyagraha. He led a number of movements for the freedom of India.