This picture taken on June 1, 2019 shows Alex Gao trying to balance a book on his head during an etiquette and manners class in central Shanghai. Against a soundtrack of classical music, children learn social skills, dining manners and deportment in the class, which costs $390 for four hours of practical instruction per student. (Photo by Hector Retamal/AFP Photo)

Britain's Prime Minister Boris Johnson gestures during a visit to Darnford Farm in Banchory near Aberdeen in Scotland on September 6, 2019. Prime Minister Boris Johnson heads to Scotland on Friday in campaign mode despite failing to call an early election after MPs this week thwarted his hardline Brexit strategy. (Photo by Andrew Milligan/Pool via AFP Photo)

A reveller wearing a mask and a period costume takes part in the Venice Carnival on February 24, 2019 in Venice, Italy. The carnival in Venice takes place until March 5, 2019. (Photo by Alberto Pizzoli/AFP Photo)

An elephant calf yawns as mahouts paint elephants ahead of celebrations for the water festival of Songkran in Ayutthaya, Thailand on April 11, 2019. The annual elephant Songkran event is held to promote the tourism industry. Songkran Festival is held also to mark the Thai traditional New Year falling annually on 13 April, and it is celebrated with people splashing water and putting powder on each other faces as a symbolic sign of cleansing and washing away the sins from the past year. (Photo by Soe Zeya Tun/Reuters)

In advance of Fleet Week performances, the U.S. Navy Blue Angels and Team Oracle aerobatics pilot Sean D. Tucker fly over the San Francisco Bay during a photo flight on Thursday, October 5, 2017. (Photo by Noah Berger/AP Photo)

A Nubian ibex roams the streets during a national lockdown in Mitzpe Ramon, southern Israel, 22 January 2021. Although Israel is one of the first countries to have received vaccines and has so far vaccinated more then two million of its around nine million citizens, the rate of infection with the Sars-CoV-2 coronavirus, that causes the coronavirus disease (COVID-19), is rising drastically as Israel entered a full closure of two weeks. (Photo by Abir Sultan/EPA/EFE)

Soo Joo Park poses during a photocall before the Chanel Spring/Summer 2019 women's ready-to-wear collection show during Paris Fashion Week in Paris, France, October 2, 2018. (Photo by Gonzalo Fuentes/Reuters)

Children carrying guns and flags or wearing Soviet-style uniforms have become a common sight at Victory Day parades and other events in Russian-controlled Crimea. Russian and Ukrainian human rights activists have warned that such displays point to a growing trend of promoting Russian patriotism among kids on the Crimean peninsula, annexed from Ukraine in 2014. Here: A young Crimean girl wears military-type clothes during a Victory Day celebration in Sevastopol on May 9, 2018. (Photo by Oleksandra Surgan/Radio Free Europe/Radio Liberty)