A military band prepares to play the national anthems before Cuban President Raul Castro welcomes U.S. President Barack Obama at the Palacio de la Revolucion in Havana March 21, 2016. Barack Obama on Sunday became the first US president in 88 years to visit Cuba, touching down in Havana for a landmark trip aimed at ending decades of Cold War animosity. (Photo by Jonathan Ernst/Reuters)

A demonstrator holds a rose and shouts slogans in front of a riot policeman during an unauthorized march called by secondary students to protest against government education reforms in Valparaiso, Chile, May 26, 2016. (Photo by Rodrigo Garrido/Reuters)

Fireworks are seen above the Washington Monument and the White House at the conclusion of the final day of the Republican National Convention on August 27, 2020 in Washington, DC. President Donald Trump and Vice President Mike Pence accepted the nomination as the Republican candidates for a second term in the White House. (Photo by Tasos Katopodis/Getty Images)

A man treats a woman affected by pepper spray as Washington Metropolitan Police officers clash with demonstrators trying to pull down the statue of U.S. President Andrew Jackson in the middle of Lafayette Park in front of the White House during racial inequality protests in Washington, D.C., U.S., June 22, 2020. Dozens of law enforcement officers, led by U.S. Park Police, stormed into the square, swinging batons and firing chemical agents to scatter protesters. By dark, police had taken control and outnumbered demonstrators in the immediate area. (Photo by Tom Brenner/Reuters)

Dani Alves of Paris Saint-Germain and Spanish model Joana Sanz are pictured inside the photo booth prior to The Best FIFA Football Awards at Royal Festival Hall on September 24, 2018 in London, England. (Photo by Michael Regan – FIFA/FIFA via Getty Images)

A pile of destroyed cars of teachers sits outside Briarwood elementary school in Oklahoma City, Oklahoma May 22, 2013. Rescue workers with sniffer dogs picked through the ruins on Wednesday to ensure no survivors remained buried after a deadly tornado left thousands homeless and trying to salvage what was left of their belongings. Curvature of horizon in the photo is due to an ultra-wide angle lens. (Photo by Rick Wilking/Reuters)

Ceremonial skulls La Paz, Bolivia on November 6, 2020. Toads are in Bolivia symbols of the soil and of luck. They complement the Ñatitas, skulls of deceased people that are believed to have special powers. People ask them for different favours. The tradition is related to All Saints´ Day. (Photo by Radoslaw Czajkowski/Rex Features/Shutterstock)

Police detain a woman protesting against the court verdict for Yuliy Boyarshinov, and Viktor Filinkov, members of a left-wing group Set (Network) at the Western regional military court in St.Petersburg, Russia, Monday, June 22, 2020. A Russian military court convicted two members of a left-wing youth group of terrorism Monday and sentenced them to prison terms of five and a half and seven years, in a case that human rights groups called fabricated and based on coerced testimony. (Photo by Dmitri Lovetsky/AP Photo)