California drought: On patrol with the celebrity 'water police'

More than 2,000 people in an exclusive Californian neighbourhood, including celebrities such as Kevin Hart and Kim Kardashian, have been put on a list of water offenders as drought ravages the state.

The BBC went on patrol with the people residents have labelled the 'water police', who are tasked with reducing water use and educating people about how to cut back.

In a blistering third year of drought, Californians have been asked to limit their indoor water usage to 55 gallons (208 litres) per person per day. It takes about...