Syrian Internal Security Forces dance in celebration during their graduation ceremony, at Ain Issa desert base, in Raqqa province, northeast Syria, Thursday, July 20, 2017. Some 250 residents of Syria's Raqqa province are the latest batch to graduate from a brief U.S-training course that is preparing an internal security force to hold and secure areas as they are captured from Islamic State militants. (Photo by Hussein Malla/AP Photo)

Women perform in the traditional “Morenada” dance during Carnival, in Oruro, Bolivia, Saturday, March 2, 2019. The unique festival features spectacular folk dances, extravagant costumes, beautiful crafts, lively music, and up to 20 hours of continuous partying with lots of tourists, drawing crowds of up people annually. (Photo by Juan Karita/AP Photo)

Hundreds of students take part in the traditional Raisin Monday foam fight on St Salvator’s Lower College Lawn in Scotland on October 21, 2019. The messy display is the culmination of a weekend of festivities where first years say thank you to their more senior student “parents” for mentoring them. (Photo by Jane Barlow/PA Images via Getty Images)

A young child dressed as the Hindu deity Shiva looks at a cow while waiting for alms from pilgrims in Pushkar in the western Indian state of Rajasthan on October 24, 2019. (Photo by Himanshu Sharma/AFP Photo)

Jo Swinson, Leader of the Liberal Democrats takes part in some boxing practice as she campaigns at a boxing gym for young people on November 13, 2019 in London, England. The United Kingdom will hold a general election on December 12. (Photo by Leon Neal/Getty Images)

Owners and their dogs take part in “HK Doggie Dash 2018”, an event held to raise money for for abandoned and surrendered dogs in Hong Kong on April 15, 2018. Dozens of pugs and dachshunds compensated for their modest speed with peppy spirits at Hong Kong’s inaugural “doggie dash” on April 15 that raised funds and awareness for the city’s abandoned and rescued dogs. (Photo by Isaac Lawrence/AFP Photo)

France fan before the Russia 2018 World Cup Group C football match between Denmark and France at the Luzhniki Stadium in Moscow on June 26, 2018. (Photo by Axel Schmidt/Reuters)

The Invasion. A quiet street in Macau. Modernization around is quickly changing the city, as documented by Paul Tsui. (Photo by Paul Tsui/National Geographic Travel Photographer of the Year Contest)