A person walks past the stop with a social distancing sign on the pavement as the spread of the coronavirus disease (COVID-19) continues, in Milan, Italy, April 27, 2020. REUTERS/Flavio Lo Scalzo 

Stones painted by passers-by are seen at Giggleswick Settle Bridge, as the spread of the coronavirus disease (COVID-19) continues, in Settle, Yorkshire, Britain April 24, 2020. REUTERS/Lee Smith 

A stone painted by passers-by is seen at Giggleswick Settle Bridge, as the spread of the coronavirus disease (COVID-19) continues, in Settle, Yorkshire, Britain April 24, 2020. REUTERS/Lee Smith 

A stone painted by passers-by is seen at Giggleswick Settle Bridge, as the spread of the coronavirus disease (COVID-19) continues, in Settle, Yorkshire, Britain April 24, 2020. REUTERS/Lee Smith 

Stones painted by passers-by as tribute to NHS are seen at Giggleswick Settle Bridge, as the spread of the coronavirus disease (COVID-19) continues, in Settle, Yorkshire, Britain April 24, 2020. REUTERS/Lee Smith 

Stones painted by passers-by as tribute to NHS are seen at Giggleswick Settle Bridge, as the spread of the coronavirus disease (COVID-19) continues, in Settle, Yorkshire, Britain April 24, 2020. REUTERS/Lee Smith 

A stone painted by passers-by as tribute to NHS is seen at Giggleswick Settle Bridge, as the spread of the coronavirus disease (COVID-19) continues, in Settle, Yorkshire, Britain April 24, 2020. REUTERS/Lee Smith 

A stone painted by passers-by as tribute to NHS is seen at Giggleswick Settle Bridge, as the spread of the coronavirus disease (COVID-19) continues, in Settle, Yorkshire, Britain April 24, 2020. REUTERS/Lee Smith 

Signs are aligned as tribute to the NHS, as the spread of the coronavirus disease (COVID-19) continues, in East London, Britain, April 24, 2020. REUTERS/Henry Nicholls 

A sign displays a demand for more coronavirus tests, as the spread of COVID-19 continues, in East London, Britain, April 24, 2020. REUTERS/Henry Nicholls 

Stones decorated with messages are seen on a path nearby the rhine river, as the spread of the coronavirus disease (COVID-19) continues in Cologne, Germany, April 22, 2020. The writings reads: "All will be well". REUTERS/Thilo Schmuelgen 

People walk past stones decorated with messages on a path nearby the rhine river, as the spread of the coronavirus disease (COVID-19) continues in Cologne, Germany, April 22, 2020. The writing on the middle stone reads: "Stay healthy". REUTERS/Thilo Schmuelgen 

A red fox walks in an empty park in the southern Israeli city of Ashkelon, where predatory animals now roam amid the coronavirus disease (COVID-19) restrictions that have closed beaches and emptied sidewalks April 19, 2020. Picture taken on April 19, 2020. REUTERS/ Amir Cohen 

A coronavirus warning sign is posted at a closed pedestrian crossing at the U.S.-Mexico border during the coronavirus disease (COVID-19) outbreak in San Diego, California, U.S., April 21, 2020. REUTERS/Mike Blake 

A signage in support of the NHS is pictured in a wall, amid the outbreak of the coronavirus disease (COVID-19), in Sunderland, Britain, April 21, 2020. REUTERS/Lee Smith 

Social distancing markings are seen at Westminster tube station, amid the coronavirus disease (COVID-19) outbreak, in London, Britain April 21, 2020. REUTERS/Hannah McKay 

A social distancing marking is seen at Westminster tube station, amid the coronavirus disease (COVID-19) outbreak, in London, Britain April 21, 2020. REUTERS/Hannah McKay 

A rainbow and a "thank you" message is chalked on a residential street in Charlton, London, Britain April 20, 2020 REUTERS/William James 

A signage supporting NHS is pictured on the beach in Blyth as the spread of the coronavirus disease (COVID-19) continues in Britain, April 19, 2020. REUTERS/Lee Smith 

Directional signs are seen in Ammiq Wetland, in Lebanon's eastern Bekaa valley, Lebanon April 14, 2020. Picture taken April 14, 2020. REUTERS/Ali Hashisho 

Social distancing markers are seen as the spread of coronavirus disease (COVID-19) continues in London, Britain, April 15, 2020. REUTERS/Hannah McKay 

A notice telling people to stay 2 metres apart is seen in Dalston as the spread of the coronavirus disease (COVID-19) continues, London, Britain, April 14, 2020. REUTERS/Hannah McKay 

A chalk drawing is seen on a pavement in London, as the spread of the coronavirus disease (COVID-19) continues, London, Britain, April 13, 2020. REUTERS/Hannah McKay 

A girl draws a thank you message on the pavement in Broadway as the spread of the coronavirus disease (COVID-19) continues, Broadway, Britain, April 10, 2020. REUTERS/Eddie Keogh 

A message is seen written in chalk on a wall in Mudchute as the spread of the coronavirus disease (COVID-19) continues, in London, Britain, April 5, 2020. REUTERS/Steven Watt 

Drawings of hands and rainbows are seen in a window, as the spread of the coronavirus disease (COVID-19) continues, Antrim, Northern Ireland, April 4, 2020. REUTERS/Jason Cairnduff 

Social distancing markings are seen on the pavement in Greenwich Park, as the spread of the coronavirus disease (COVID-19) continues, London, Britain, April 4, 2020. REUTERS/Hannah McKay TPX IMAGES OF THE DAY 

A vessel with a drawing of a snake is pictured on the bank of the Hanumante River during the final day of the month-long Swasthani Brata Katha festival in Bhaktapur, Nepal February 9, 2020. REUTERS/Navesh Chitrakar 

Drawing are pictured at the Extinction Rebellion protest site at the Marble Arch in London, Britain April 24, 2019. REUTERS/Toby Melville 

A woman belonging to a caravan of migrants from El Salvador en route to the United States, writes a message while resting at the Central Park in Tecun Uman, Guatemala, November 1, 2018. REUTERS/Ueslei Marcelino 

A drawing of a house hangs on the wall of an empty hut after its inhabitants left the Roma shanty town of El Gallinero, on the outskirts of Madrid, Spain, September 25, 2018. REUTERS/Susana Vera SEARCH "VERA EL GALLINERO" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

REFILE - UPDATING BYLINE IN IPTC A cup of cappuccino coffee is prepared at a Nairobi Java House outlet in Nairobi, Kenya May 4, 2018. REUTERS/Njeri Mwangi 

A decorated Spanish guitar is seen as folk music guitarists perform during the traditional feast of St Gregory in Marsaxlokk, Malta, April 4, 2018. REUTERS/Darrin Zammit Lupi 

Molds for the manufacture of guitars, are displayed inside a workshop of instruments at Vina del Mar, Chile April 4, 2018. REUTERS/Rodrigo Garrido 

A woman shouts a slogan at a nationwide feminist strike on International Women's Day in Malaga, Spain, March 8, 2018. REUTERS/Jon Nazca 

Wood-cased coloured pencils are pictured in a shop at Faber-Castell manufacturer in Stein near Nuremberg, Germany January 16, 2018. Picture taken January 16, 2018. REUTERS/Michaela Rehle 

A smiley face is seen drawn in the snow covered window of a beach house in Port Washington, New York, U.S. February 9, 2017. REUTERS/Shannon Stapleton 

A drawing of what Raphaela Bernard, 4, wants to get for Christmas from Santa, is seen in Altadena, California U.S., November 27, 2016. Raphaela wants a fairy garden. Reuters photographers around the world asked children to draw what they wanted to receive from Santa for Christmas. REUTERS/Mario Anzuoni SEARCH "CHRISTMAS WISHES" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A drawing of what Jasmine Maria, 6, wants to get for Christmas from Santa, is seen in London, Britain, November 24, 2016. Jasmine's wish is a Playmobil hospital. "I want to match with my Playmobil castle, so that those people in there can go into the hospital," she said. Reuters photographers around the world asked children to draw what they wanted to receive from Santa for Christmas. REUTERS/Stefan Wermuth SEARCH "CHRISTMAS WISHES" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A drawing of what AJaedene Alyzxandra Medina, 5, wants to get for Christmas from Santa, is seen in Las Pinas, Metro Manila, Philippines, November 29, 2016. Jaedene said she wants a pet bunny (rabbit) because her mom doesn't allow her to have a pet dog or cat yet. Reuters photographers around the world asked children to draw what they wanted to receive from Santa for Christmas. REUTERS/Erik De Castro SEARCH "CHRISTMAS WISHES" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Jaedene Alyzxandra Medina, 5, poses for a photograph inside her classroom at Child's Home Educational Center in Las Pinas, Metro Manila Philippines, November 29, 2016. REUTERS/Erik De Castro SEARCH "CHRISTMAS WISHES" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

Jasmine Maria, 6, poses for a photograph in Balham, south London, Britain November 24, 2016. REUTERS/Stefan Wermuth SEARCH "CHRISTMAS WISHES" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A combination picture shows Jasmine Maria, 6, posing for a photograph (top) and her drawing of what she wants to get for Christmas from Santa in Balham, south London, Britain November 24, 2016. Jasmine's wish is a Playmobil hospital. "I want to match with my Playmobil castle, so that those people in there, can go into the hospital," she said. Reuters photographers around the world asked children to draw what they wanted to receive from Santa for Christmas. REUTERS/Stefan Wermuth SEARCH "CHRISTMAS WISHES" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A combination picture shows Jaedene Alyzxandra Medina, 5, posing for a photograph inside her classroom at Child's Home Educational Center (top) and her drawing of what she wants to get for Christmas from Santa, in Las Pinas, Metro Manila, Philippines, November 29, 2016. Jaedene said she wants a pet bunny (rabbit) because her mom doesn't allow her to have a pet dog or cat yet. Reuters photographers around the world asked children to draw what they wanted to receive from Santa for Christmas. REUTERS/Erik De Castro SEARCH "CHRISTMAS WISHES" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A combination picture shows Raphaela Bernard, 4, posing for a photograph in the backyard of her home (top) and her drawing of what she wants to get for Christmas from Santa, in Altadena, California U.S., November 27, 2016. Raphaela wants a fairy garden. Reuters photographers around the world asked children to draw what they wanted to receive from Santa for Christmas. REUTERS/Mario Anzuoni SEARCH "CHRISTMAS WISHES" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. 

A flower is pictured between cutouts of players of Chapecoense soccer team during a tribute at the Arena Conda stadium in Chapeco, Brazil December 1, 2016. REUTERS/Ricardo Moraes 

A drawing lies next to cutouts of players of Chapecoense soccer team during a tribute at the Arena Conda stadium in Chapeco, Brazil December 1, 2016. REUTERS/Ricardo Moraes 

A drawing of a world map is seen on a wall inside a derelict customs warehouse occupied by migrants in Belgrade, Serbia, November 10, 2016. REUTERS/Marko Djurica SEARCH "MIGRANTS WAREHOUSE" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

A drawing left by Islamic State militants adorns the wall of a school after the city was recaptured in Qayyara, Iraq, November 17, 2016. REUTERS/Ari Jalal 

An illustration picture shows the Twitter logo reflected in the eye of a woman in Berlin, November 7, 2013. REUTERS/Fabrizio Bensch/Illustration/File Photo

A child holds a sign as Republican presidential nominee Donald Trump rallies with supporters in Kenansville, North Carolina, U.S. September 20, 2016. REUTERS/Jonathan Ernst 

Opposition supporters carry an illustration of Venezuela's President Nicolas Maduro that reads "lets recall him" take part in a rally to demand a referendum to remove Venezuela's President Nicolas Maduro, in Caracas, Venezuela, September 1, 2016. REUTERS/Carlos Garcia Rawlins 

A woman walks across a chalk drawing of the Bernie Sanders campaign logo outside the Wells Fargo Center on the first day of the Democratic National Convention in Philadelphia, Pennsylvania, U.S., July 25, 2016. REUTERS/Dominick Reuter 

A drawing made during a lesson at a school shows what a student ate during the course of a day in Caracas, Venezuela July 14, 2016. The student wrote, "Ate corn cake with cheese for breakfast; had spaghetti with egg for lunch and a cookie for dinner." The student said that pizza was their favourite dish. Picture taken July 14, 2016. REUTERS/Carlos Jasso SEARCH "CHILDREN HUNGER" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES TPX IMAGES OF THE DAY?

A drawing made during a lesson at a school shows what a student ate during the course of a day in Caracas, Venezuela July 14, 2016.The student wrote, "Ate nothing for breakfast; had bread, butter and water for lunch and had nothing for dinner. I like lasagna and cake." Picture taken July 14, 2016. REUTERS/Carlos Jasso SEARCH "CHILDREN HUNGER" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

The SWIFT logo is pictured in this photo illustration taken April 26, 2016. To match Special Report CYBER-HEIST/FEDERAL REUTERS/Carlo Allegri/Illustration/File Photo

A supporter of U.S. Democratic presidential candidate Senator Bernie Sanders holds a sign during a rally in Portsmouth, New Hampshire, U.S. July 12, 2016. REUTERS/Mary Schwalm 

A drawing of a Haute Couture Chanel dress by German designer Karl Lagerfeld is seend during his Haute Couture Fall Winter 2016/2017 fashion show for Chanel in Paris, France, July 5, 2016. REUTERS/Benoit Tessier 

An Apple iPhone 6 with Apple Pay is shown in this photo illustration in Encinitas, California, U.S. June 3, 2015. REUTERS/Mike Blake/File Photo

Ferlandas Wright, 7, draws with chalk on the sidewalk before a neighborhood celebration to celebrate the life of the late Muhammad Ali, former world heavyweight boxing champion at Ali's childhood home in Louisville, Kentucky, U.S. June 6, 2016. REUTERS/John Sommers II