Mask dancers take part in a parade during the the International Festival of Masquerade Games “Surva” in the town of Pernik, some 30 km from Sofia, Bulgaria, 27 January 2019. In ancient times the old Thracians held the Kukeri Ritual Games in honor of god Dionysus – known as a god of wine and ecstasy. Even today these games are also known as the Dionysus' games. Among the Kukeri dancers' are many characters, including Dionysus and his satyrs as well as others from deep history such as the tsar, harachari, plyuvkachi, startzi, and pesyatzi. (Photo by Vassil Donev/EPA/EFE)

A family dressed in traditional chinese clothes celebrates the Chinese New Year in Chinatown in Bangkok, Thailand February 8, 2016. (Photo by Jorge Silva/Reuters)

Ostriches wear masks as they are transported by a truck for relocation in Zhengzhou, Henan Province, China, August 8, 2016. (Photo by Reuters/Stringer)

A woman looks out from her stall selling traditional garments and textiles at a market in Ashgabat February 8, 2012. (Photo by Aman Mehinli/Reuters)

Starlings are seen at their nesting box in a private garden in the town of Bobruisk, Belarus, April 8, 2018. (Photo by Vasily Fedosenko/Reuters)

A reveler performs during the Myths and Legends parade in Medellin, Antioquia department, Colombia on December 8, 2018. (Photo by Joaquín Sarmiento/AFP Photo)

A demonstrator uses a slingshot during a protest against Chile's government in Santiago, Chile on November 8, 2019. (Photo by Pablo Sanhueza/Reuters)

Commuters hang off a local passenger train in the morning in Colombo, Sri Lanka September 8, 2016. (Photo by Dinuka Liyanawatte/Reuters)