A British Museum representative poses for photographs next to Andy Warhol's “Mao”, left, and Jim Dine's “Drag: Johnson and Mao” which feature in “The American Dream: pop to the present” exhibition during a media photocall at the British Museum in London, Monday, March 6, 2017. The exhibition, which opens to the public from March 9 and runs until June 18, charts modern and contemporary print making. (Photo by Matt Dunham/AP Photo)

Fifty years ago, as France exploded in mass protests, words scrawled on the walls of the Sorbonne summed up the revolutionary zeal of the time: “Run free, comrade, we’ve left the old world behind!”. Sexual liberation, artistic creativity and anti-capitalism were the order of the day. For those who were there, it was an unforgettable time. Here: A wounded student is transported by first-aid workers during riots on the Boulevard Saint-Michel, Paris, France on May 6, 1968. (Photo by Gökşin Sipahioğlu/SIPA Press)

General view of a clash after the match of the Egyptian Premier League between Pyramids FC and Zamalek at the 30 June Air Defense Stadium in Cairo, Egypt on April 23, 2019. (Photo by Amr Abdallah Dalsh/Reuters)

Lava flows from an eruption of a volcano on the Reykjanes Peninsula in Iceland on March 28, 2021. A week on, big crowds of Sunday hikers flocked to the Fagradalsfjall area to see up close Iceland's latest volcano eruption, as the gentle lava flow allowed people to get close to he eruption some 40 km west of Iceland's capital Reykjavik. (Photo by Halldor Kolbeins/AFP Photo)

Mercedes' British driver Lewis Hamilton (L) and Red Bull's Dutch driver Max Verstappen collide during the Italian Formula One Grand Prix at the Autodromo Nazionale circuit in Monza, on September 12, 2021. (Photo by Andrej Isakovic/AFP Photo)

Partner of Team USA's Dustin Johnson, Paulina Gretzky celebrates with champagne after winning over Team Europe during Sunday Singles Matches of the 43rd Ryder Cup at Whistling Straits on September 26, 2021 in Kohler, Wisconsin. (Photo by Jonathan Ernst/Reuters)

Kyla Drumm, 5, waits after receiving the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine in Skippack, Pennsylvania, U.S., November 3, 2021. (Photo by Hannah Beier/Reuters)

Maria Sakkara of Greece in action against Ann Li of the United States in her second round match at the Qatar TotalEnergies Open at the Khalifa International Tennis & Squash Complex on February 22, 2022 in Doha, Qatar (Photo by Robert Prange/Getty Images)