Tonight on Reality Check, we examine the implication of terror attack in Punjab on Sunday, in which three people were killed in a prayer hall in Amritsar. Those targeted were Nirankaris, a spiritual movement, not recognised by Sikhs. As the Indian Express reminded us, four decades ago, it was a bloody clash between Sikhs and Nirankari sect in Amritsar that triggered Sikh militancy in Punjab, with all the repercussions for India. Who would want to spark those long buried fires?