Secondary school graduates play in a fountain as they celebrate the last day of school, traditionally called the “last bell” in central Kiev, Ukraine on May 31, 2019. (Photo by Valentyn Ogirenko/Reuters)

Japan's delegation gather to sign the formal surrender document on the U.S. Navy battleship USS Missouri in Tokyo Bay in a September 2, 1945 file photo. (Photo by Reuters/US Navy)

Buddy Mae Walker (R), 4, looks at herself in the mirror while trying on a child respirator provided by the non-profit TeamRaccoonPDX on October 6, 2020 in Portland, Oregon. We told them their grandparents sent them space suits to keep them safe, Jessica Walker said of the respirators, which the family sought out after police used tear gas near their residential street. (Photo by Nathan Howard/Getty Images)

A girl picks catkins at a field amid the COVID-19 pandemic in Sarighat, on the outskirts of Dhaka, Bangladesh, October 2, 2020. (Photo by Mohammad Ponir Hossain/Reuters)

A Palestinian clown wearing a face mask while entertaining children at their home during the lockdown after the outbreak of the COVID-19 pandemic in Jabalia Refugee Camp in northern Gaza Strip on November 18, 2020. (Photo by Mahmoud Issa/Quds Net News/ZUMA Wire/Rex Features/Shutterstock)

A lion rests in the Nairobi National Park, Kenya on January 6, 2021. (Photo by Tiksa Negeri/Reuters)

A topless Femen activist jumps on the car carrying former IMF chief Dominique Strauss-Kahn (not seen) as he arrives for his trial in Lille, northern France, on February 10, 2015. Three topless women from the protest group Femen jumped on the car of Dominique Strauss-Kahn as the former IMF chief arrived to testify at his trial for “aggravated pimping”. With slogans scrawled on their half-naked bodies and hurling insults at the car, the three protesters were quickly rounded up by police as the car entered an underground parking area. (Photo by Denis Charlet/AFP Photo)

France's Orlann Ombissa-Dzangue and Czech Republic's Marcela Pirkova compete during a women's 60m heat at the 2021 European Athletics Indoor Championships in Torun on March 7, 2021. (Photo by Sergei Gapon/AFP Photo/Profimedia)