Women in India often hear from an early age that they shouldn't be out in public without a purpose and a place to go. And certainly they shouldn't be out late at night without the company of a man. "Don't loiter," they're urged. But a group of women in Mumbai is challenging that notion by going on late-night walks together and just hanging out. Rhitu Chatterjee tags along for a "loitering session" that manages to feel both sinister and uplifting.