Describe the incident and impact of the Jallianwalla Bagh?

On 13 April the infamous Jallianwalla Bagh incident took place. On that day a large crowd gathered in the enclosed ground of Jallianwalla Bagh. Some came to protest against the government’s new repressive measures. Others had come to attend the annual Baisakhi fair. Being from outside the city, many villagers were unaware of the martial law that had been imposed. Dyer entered the area, blocked the exit points, and opened fire on the crowd, killing hundreds. His object, as he declared later, was to ‘produce a moral effect’, to create in the minds of satyagrahis a feeling of terror and awe. As the news of Jallianwalla Bagh spread, crowds took to the streets in many north Indian towns. There were strikes, clashes with the police and attacks on government buildings.