(L-R) Pieter Van Lankveld, Jay Schippers, Ynze Oegema, Justin Kimmann, Teun Kivit and Twan Van Gendt compete during the Dutch National BMX Championships at Olympic Training Centre Papendal on October 11, 2020 in Arnhem, Netherlands. (Photo by Dean Mouhtaropoulos/Getty Images)

Ellen MacRae a student from Edinburgh University take a lateral flow antigen test at a test centre which is also open to students in Edinburgh Napier University, Queen Margaret University and SRUC on December 1, 2020 in Edinburgh, Scotland. The programme is running in partnership between the University of Edinburgh and other Scottish universities, the Scottish Government and NHS Test and Protect, supporting students leaving their term-time accommodation to travel home at the end of term for the winter break. (Photo by Jeff J. Mitchell/Getty Images)

A man bathes in an ice hole in the Neva River in St. Petersburg, Russia, Wednesday, January 13, 2021. The temperature in St. Petersburg is –15C ( 5 °F). (Photo by Dmitri Lovetsky/AP Photo)

Fireworks light up the sky around the White House, Wednesday night, January 20, 2021, in Washington, as part of the festivities after President Joe Biden was inaugurated today. (Photo by Gerald Herbert/AP Photo)

An injured person reacts during a protest against the new government of President Manuel Merino, in San Martin de Lima square, in Lima, Peru, 14 November 2020. Merino took office on 10 November amid a controversial constitutional process after the dismissal of former President Martin Vizcarra for “moral incapacity” by Peruvian Congress. (Photo by Aldair Mejia/EPA/EFE)

A woman takes part in a protest at Parliament Square, following the kidnap and murder of Sarah Everard, in London, Britain March 15, 2021. Everard, 33, was abducted as she walked home in south London on March 3 and a police officer has been charged with her kidnap and murder, provoking a national debate over how British society deals with male violence against women. (Photo by Henry Nicholls/Reuters)

A prong extending from a remote-controlled robot prototype approaches the mouth of a volunteer to extract a throat swab sample, as part of a self-funded project to assist physicians in running tests on suspected COVID-19 coronavirus patients in a bid to limit human exposure to disease-carriers, at a private hospital in Egypt's Nile delta city of Tanta, on March 20, 2021. (Photo by Khaled Desouki/AFP Photo)

United States Air Force Academy graduates cheer as the United States Air Force Thunderbirds fly over the graduation for the Class of 2021 at Falcon Stadium on May 26, 2021 in Colorado Springs, Colorado. Chairman of the Joint Chiefs of Staff General Mark A. Milley gave the commencement address to the 1,019 graduates from the academy. (Photo by Michael Ciaglo/Getty Images)