David Cameron visits a memorial to a 1920 massacre in the British city of Amritsar . David Cameron : `` 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 . We must never forget what happened here '' British prime minister Cameron of a formal apology for the colonial-era massacre . Hundreds of people were killed when Indian troops opened fire on unarmed protesters .
David Cameron visits a memorial to a 1920 massacre in the British city of Amritsar . David Cameron : `` We must never forget what happened here '' British prime minister Cameron of a formal apology for the colonial-era massacre . Hundreds of people were killed when Indian troops opened fire on unarmed protesters .