The atrocity occurred when a British Army general ordered troops to open fire to disperse a crowd of unarmed protesters who had gathered in Jallianwala Bagh , Amritsar . David Cameron visits a memorial to a 1919 massacre in the Indian city of Amritsar . Cameron : `` We must never forget what happened here '' and we will not let it happen again. Hundreds of people were killed when British troops opened fire on unarmed protesters .
David Cameron visits a memorial to a 1919 massacre in the Indian city of Amritsar . Cameron : `` We must never forget what happened here '' and we will not let it happen again. Hundreds of people were killed when British troops opened fire on unarmed protesters .