Finally, it’s a pleasant evening in Delhi after a summer that didn’t look like it would end. The rain has slowed to an agreeable drizzle; there is a cool breeze in the July air—India Gate hasn’t seen so many smiles in months. Anupriya Mathur, 26, saunters down Rajpath towards Rashtrapati Bhavan, with headphones on, peering into her smartphone. Dusk is creeping in and the crowd has thinned. Suddenly she tenses; she feels a presence near her.