"Hum India ke hai, kal bhi thhe, aur aaj bhi hai (We belong to India, we were from here, and remain Indian)," says Zareena Bibi, peeking out of the veil covering her face. A resident of Jahangirpuri slums, 37-year-old Zareena was born and brought up here after her family migrated to Delhi in the 1970s to look for work.