A labourer (L) and a shopkeeper read newspapers during morning hours at a wholesale market in Kolkata, India May 16, 2016. (Photo by Rupak De Chowdhuri/Reuters)





Labourer carry sacks filled with sugar to load them onto a supply truck at a wholesale market in Kolkata, India May 16, 2016. (Photo by Rupak De Chowdhuri/Reuters)





A labourer marks the sacks filled with pulses before loading them into a truck as others wait in a queue to load at a wholesale market in Kolkata, India May 16, 2016. (Photo by Rupak De Chowdhuri/Reuters)





A Sadhu or Hindu holy man combs his beard after taking a dip in the waters of Shipra river during Simhastha Kumbh Mela in Ujjain, India May 16, 2016. (Photo by Jitendra Prakash/Reuters)





A laundryman washes a shirt inside an open air laundry in New Delhi, India, May 16, 2016. (Photo by Anindito Mukherjee/Reuters)





Wrestlers exercise at a traditional Indian wrestling training centre on the banks of the river Ganges ahead of the Bengal mud wrestling championships, in Kolkata, India May 17, 2016. (Photo by Rupak De Chowdhuri/Reuters)





A wrestler applies mud to prevent slipping due to sweat, at a traditional training centre on the banks of the river Ganges ahead of the Bengal mud wrestling championships, in Kolkata, India May 17, 2016. (Photo by Rupak De Chowdhuri/Reuters)





Wrestlers exercise at a traditional Indian wrestling training centre on the banks of the river Ganges ahead of the Bengal mud wrestling championships, in Kolkata, India May 17, 2016. (Photo by Rupak De Chowdhuri/Reuters)





A Naga Sadhu or Hindu holy man with his face covered with ash, is pictured after taking a dip in the waters of Shipra river at the Simhastha Kumbh Mela in Ujjain, India, May 17, 2016. (Photo by Jitendra Prakash/Reuters)





Barrier tape is tied around 15-month-old Shivani's ankle to prevent her from running away, while her mother Sarta Kalara works at a construction site nearby, in Ahmedabad, India, April 19, 2016. Kalara says she has no option but to tether her daughter Shivani to a stone despite her crying, while she and her husband work for 250 rupees ($3.8) each a shift digging holes for electricity cables in the city of Ahmedabad. There are about 40 million construction workers in India, at least one in five of them women, and the majority poor migrants who shift from site to site, building infrastructure for India's booming cities. Across the country it is not uncommon to see young children rolling in the sand and mud as their parents carry bricks or dig for new roads or luxury houses. (Photo by Amit Dave/Reuters)





Sarta Kalara (C), a construction worker, stands among other female workers in Ahmedabad, India, April 20, 2016. Kalara says she has no option but to tether her daughter Shivani to a stone despite her crying, while she and her husband work for 250 rupees ($3.8) each a shift digging holes for electricity cables in the city of Ahmedabad. (Photo by Amit Dave/Reuters)





Homeless couple Kiran Rana (R) and Vishal Rana (L) help their son Kanish Rana, 6, with his studies outside a closed shop on a pavement in Kolkata, India May 18, 2016. (Photo by Rupak De Chowdhuri/Reuters)





Homeless children play on their father's rickshaw at a roadside in Kolkata, India May 18, 2016. (Photo by Rupak De Chowdhuri/Reuters)





A homeless boy Kanish Rana, 6, looks out from a shade as he studies outside a closed shop on a pavement in Kolkata, India May 18, 2016. (Photo by Rupak De Chowdhuri/Reuters)





A woman combs her daughter's hair after taking a dip in the Shipra river at the Simhastha Kumbh Mela in Ujjain, India, May 18, 2016. (Photo by Jitendra Prakash/Reuters)





A shepherd tries to control his buffalo in a pond on a hot summer day on the outskirts of Ahmedabad, India May 18, 2016. (Photo by Amit Dave/Reuters)





People sleep under a bridge on a hot summer day in Ahmedabad, India May 18, 2016. (Photo by Amit Dave/Reuters)





A shepherd covers himself with a scarf as he walks next to his buffalo on a hot summer days on the outskirts of Ahmedabad, India May 18, 2016. (Photo by Amit Dave/Reuters)





A woman walks along a road during heavy rains in Agartala, India May 18, 2016. (Photo by Jayanta Dey/Reuters)





A farmer sits on a trolley loaded with melons as he waits for customers at a wholesale fruit and vegetable market in Chandigarh, India May 19, 2016. (Photo by Ajay Verma/Reuters)





A Hindu devotee takes a holy dip in the Shipra river at the Simhastha Kumbh Mela in Ujjain, India, May 20, 2016. (Photo by Jitendra Prakash/Reuters)