Jallianwala Bagh Massacre, Jallianwala also spelled Jallianwalla, also called Massacre of Amritsar, incident on April 13, 1919, in which British troops fired on a large crowd of unarmed Indians in an open space known as the Jallianwala Bagh in Amritsar in the Punjab region (now in Punjab state) of India, killing several hundred people and wounding many hundreds more. It marked a turning point in India’s modern history.

During World War I (1914–18) the British government of India enacted a series of repressive emergency powers that were intended to combat subversive activities.

On the afternoon of April 13, a crowd of at least 10,000 men, women, and children gathered in the Jallianwala Bagh, which was nearly completely enclosed by walls and had only one exit.

Dyer (one of them) and his soldiers arrived and sealed off the exit. Without warning, the troops opened fire on the crowd, reportedly shooting hundreds of rounds until they ran out of ammunition. It is not certain how many died in the bloodbath, but, according to one official report, an estimated 379 people were killed, and about 1,200 more were wounded. After they ceased firing, the troops immediately withdrew from the place, leaving behind the dead and wounded.

The Jallianwala Bagh site in Amritsar is now a national monument.

More Info: www.britannica.com