Seven-year-old Mimi Meade winces from the sting as Dr. Richard Mulvaney inoculates her April 26, 1954 in McClean, Va., with the new Salk polio vaccine. Mrs. John Lucas, a registered nurse, holds Mimi's arm steady as she gets one of the first injections of the countrywide test. (Photo by Harvey Georges/AP Photo)

A reveler takes part of the Light Festival parade in San Jose, Costa Rica on December 14, 2019. (Photo by Ezequiel Becerra/AFP Photo)

Fireworks illuminate the Ampera Bridge during a New Year's Eve celebrations in Palembang, Indonesia on January 1, 2020. (Photo by Muhammad Tohir/Sijori Images via ZUMA Wire/Rex Features/Shutterstoc)

An Iraqi soldier plays with an accordion found on the street while on patrol in the western neighborhood of Tamuz in Mosul on May 23, 2017, after the area was retaken during the ongoing offensive against Islamic State (IS) group fighters. (Photo by Ahmad Al-Rubaye/AFP Photo)

British rapper Lady Leshurr poses as she arrives for the Brit Awards at the O2 Arena in London, Britain, February 18, 2020. (Photo by Gareth Cattermole/Getty Images)

An Afghan boy walks past a destroyed Russian-made tank, in Kabul, Afghanistan on February 24, 2020. (Photo by Mohammad Ismail/Reuters)

A Palestinian man rides a donkey-drawn cart transporting an old car to a scrap yard, in Gaza City on March 15, 2020. (Photo by Mohammed Salem/Reuters)

A masked woman poses for a picture during a march demanding justice for the victims of gender violence and femicides in Mexico City, Mexico on August 16, 2020. (Photo by Raquel Cunha/Reuters)