Syrian refugees sit behind barbed wire as they wait to cross into Macedonia at the Greek-Macedonian border, near the village of Idomeni, August 21, 2015. (Photo by Yannis Behrakis/Reuters)

In advance of Fleet Week performances, U.S. Navy Blue Angels fly above San Francisco with Team Oracle aerobatics pilots Sean D. Tucker and Jessy Panzer on Thursday, October 10, 2019. (Photo by Noah Berger/AP Photo)

An Afghan teacher, in brown, helps school children run from the site of clashes near the Pakistan consulate in Jalalabad, capital of Nangarhar province, Afghanistan, Wednesday, January 13, 2016. Several members of the Afghan security forces were killed Wednesday after unidentified gunmen attacked the Pakistani consulate in a volatile eastern province, an official said on Wednesday. (Photo by Mohammad Anwar Danishyar/AP Photos)

In this picture taken with a drone a man and a woman enjoy the beautiful weather at the Langwieder See (Lake Langwieder) in Munich, Germany, Thursday, June 18, 2020. (Photo by Sven Hoppe/dpa via AP Photo)

Traditional “Tantawawas” bread shaped like children sit on a grave as a Day of the Dead offering at the Villa Ingenio cemetery in El Alto, Bolivia, Monday, November 2, 2020. (Photo by Juan Karita/AP Photo)

A boy walks by a model of a dinosaur wearing a face mask, during a partial lockdown to prevent the spread of the coronavirus, at the Museum of Natural History in Brussels, Tuesday, May 19, 2020. Museums are hesitantly starting to reopen as the coronavirus lockdown measures are relaxed, yet experts say that one in eight in the world could potentially face permanent closure because of the pandemic. (Photo by Virginia Mayo/AP Photo)

Dozens of people participate in the religious pilgrimage to the National Shrine of El Rincon, in the municipality of Boyeros, in Havana, Cuba, 17 December 2018. As is customary every year, thousands of people in mass attend the shrine to pay tribute to Saint Lazarus, to whom the faithful come for personal requests and miracles. (Photo by Ernesto Mastrascusa/EPA/EFE)

A potential Banksy has appeared on Vale Street in Bristol, United Kingdom on December 10, 2020. The elusive artist is from the city and is known for creating new works without anyone catching him in the act. An image of an old woman sneezing without covering her mouth has been spotted on a wall in the Totterdown area – a possible nod to the current health crisis. Crowds are already gathering at the bottom of Vale Street – one of Britain's steepest roads – to take pictures and discuss. (Photo by South West News Service/Action Press)