A man stands in front of a poster created by artist Tomoko Konoike, one of 20 posters officially selected for the Tokyo Olympics and Paralympics, at the Museum of Contemporary Art Tokyo Monday, January 6, 2020. The official posters are out for this year's Tokyo Olympics and Paralympics. The 20 posters have been created by 19 artists in fields ranging from painting, graphic design, and photography. Calligraphy and Japanese manga are also represented. (Photo by Jae C. Hong/AP Photo)

British Prime Minister Boris Johnson visits the Pavegen stand, a company that converts footsteps into energy, at the Innovation Zone during the UK-Africa Investment Summit in London, Britain on January 20, 2020. (Photo by Leon Neal/Pool via Reuters)

A volunteer tries out a protective suits for health workers, at the International Islamic University Malaysia in Gombak, outskirts of Kuala Lumpur, Malaysia Friday, April 10, 2020. The Malaysian government issued a restricted movement order to the public for the rest of the month to help curb the spread of the new coronavirus. (Photo by Vincent Thian/AP Photo)

A police officer who was injured when falling of a horse during scuffles with demonstrators at Downing Street during a Black Lives Matter march in London, Saturday, June 6, 2020, is dragged by colleagues, as people protest against the killing of George Floyd by police officers in Minneapolis, USA. Floyd, a black man, died after he was restrained by Minneapolis police while in custody on May 25 in Minnesota. (Photo by Frank Augstein/AP Photo)

A “friendly giant” sculpture hangs from a tree in the Hanmer Heritage Forest at Hammer Springs, New Zealand, Sunday, June 14, 2020. Christchurch sculptor Andrew Lyons created the creatures out of a redwood tree that had to be removed from nearby Hanmer Springs Thermal Pools and Spa in 2018 and carved nine sculptures including big friendly giant, some enormous mushrooms, a falcon, and a dog. (Photo by Mark Baker/AP Photo)

In Paris, doctors, orderlies and nurses demonstrated as well as all over France to remind the government of its promises on the hospital, in the middle of the “Segur de la sante” on June 16, 2020. The demonstration brought together several thousand people, with a few clashes on the esplanade des Invalides at the end of the day. (Photo by Jan Schmidt-Whitley/Le Pictorium Agency via ZUMA/Rex Features/Shutterstock)

The body of one of several U.S. soldiers who were executed after being captured by North Korean troops just south of Seoul in early July 1950. (Photo by AP Photo)

A local resident fills in documents near a mobile ballot box outside her house during a seven-day vote on constitutional reforms, in the village of Troitskoye in Moscow region, Russia on June 25, 2020. (Photo by Evgenia Novozhenina/Reuters)