A person dressed as cartoon character Homer Simpson sits on an NYPD security barricade in Times Square as preparations are made for New Years Eve in New York December 29, 2014. (Photo by Carlo Allegri/Reuters)

A demonstrator confronts riot police during a rally in defense of the nationalization of lithium reserves in the country, in Santiago, Chile on January 29, 2018. (Photo by Pablo Sanhueza/Reuters)

A man wearing a mask and dressed in a clown costume rides an electric tricycle while carrying a container in the shape of a rubber duck amid heavy smog in Beijing, China, December 29, 2015. (Photo by Jason Lee/Reuters)

A Cholita (Andean woman) fighter makes a key to their opponent during a wrestling session at the Havana Hotel Cholet in El Alto, outskirts in La Paz, Bolivia on June 29, 2018. (Photo by David Mercado/Reuters)

A snail slithers up a rain spattered window during stormy weather on the Isle of Portland, Fortuneswell, England on July 29, 2018. (Photo by Stuart Fretwell/Rex Features/Shutterstock)

A fan gestures next to a police officer while celebrating the life of British singer Keith Flint of techno group “The Prodigy” after his funeral in Braintree, Essex, Britain, March 29, 2019. (Photo by Henry Nicholls/Reuters)

Two models pose backstage before presenting the collection of Chinese designer Zhang Peng during the China Fashion Week in Beijing on March 29, 2019. (Photo by Fred Dufour/AFP Photo)

The “Assignments” exhibition is an annual chance to see the top images by UK photojournalists, as chosen by the British Press Photographers’ Association. Here: Wales’s Cory McKenna dominates Micol DiSegni during their fight at Cage Warriors 97 in Cardiff, 29 September 2018. (Photo by Chris Fairweather/Huw Evans Agency)