Rejecting UK Prime Minister Theresa May's regret for the 1919 Jallianwala Bagh massacre in Amritsar that killed thousands, Punjab CM Amarinder Singh said nothing less than an unequivocal apology would do. Days ago, British Prime Minister Theresa expressed regret for the Jallianwala Bagh massacre of 1919, calling it a as a shameful scar on the British Indian history. But she stopped short of a formal apology demanded by the main opposition leader Jeremy Corbyn. Today marks 100 years of the Jallianwala Bagh massacre. Considered one of the deadliest attacks in the history of the world, the jallianwala Bagh massacre led to the deaths of hundreds of unarmed Indians by the soldiers of the British Indian army in Amritsar.