David Nicholson, 21, surfs as "The Mask" during the ZJ Boarding House Haunted Heats Halloween Surf Contest in Santa Monica, California, United States, October 31, 2015. (Photo by Lucy Nicholson/Reuters)

A musician plays his violin next to a depiction of La Santa Muerte (Saint Death) at a shrine during Day of the Dead celebrations in Ciudad Juarez, Mexico, November 2, 2015. (Photo by Jose Luis Gonzalez/Reuters)

Revellers with their bodies and faces painted attend the "Zombie Walk" parade in Sao Paulo, Brazil, November 2, 2015. (Photo by Paulo Whitaker/Reuters)

A rag-and-bone woman stands next to carriages of a coal train outside a coal mine of the state-owned Longmay Group on the outskirts of Jixi, in Heilongjiang province, China, October 22, 2015. (Photo by Jason Lee/Reuters)

Atsushi Abe and Yumi Adachi from Japan perform in the synchronised swimming mixed duet technical routine preliminary at the Aquatics World Championships in Kazan, Russia July 25, 2015. (Photo by Michael Dalder/Reuters)

Members of Team Italy are seen underwater as they perform in the synchronised swimming team free routine preliminary at the Aquatics World Championships in Kazan, Russia July 28, 2015. (Photo by Michael Dalder/Reuters)

Protesters take part in “Artists Take Fight Against Police Murders” in New York's Times Square August 13, 2015. (Photo by Brendan McDermid/Reuters)

A worker holds harvested chillies at a chilli plantation in Pasir Datar Indah village near Sukabumi, Indonesia's West Java province, August 6, 2015. (Photo by Reuters/Beawiharta)