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Michael O' Dyer , the Governor of Punjab, apprehending a general revolt issued a proclamation on April 11, which forbade meetings and processions.On April 13, Baisakhi day, about 20,000 people assembled for a peaceful general meeting at the Jallianwala Bagh. General Dyer was seeking an opportunity to teach the people a lesson for flouting the government orders.He arrived at Jallianwala bagh with 500 troops, who were ordered to open fire without giving the people a warning to disperse. About 400 people were killed and about 1200 were wounded. 
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