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)

Members of the Coney Island Polar Bear Club warm up before swimming at the beach at Coney Island in New York, December 15, 2013. (Photo by Eric Thayer/Reuters)

Taking the highways in North Korea is a great experience as it allows to see the daily life of the country not controled by the government like in Pyongyang. They connect the main towns of the countries and are totally empty of cars. Here: The kind of scene you can see along the highway. Overloaded trucks but broken down with lot of smoke coming out... I was allowed to make those pics as after lunch, my guides were enjoying the confort of the bus seats and snoring... (Photo by Eric Lafforgue/Exclusivepix Media)

A villager dries chillies on September 1, 2020 in Bijie, Guizhou Province of China. (Photo by VCG/VCG via Getty Images)

A participant runs towards the waters of the North Sea during the annual New Year's plunge event in Ostend, Belgium, January 2, 2016. (Photo by Francois Lenoir/Reuters)

Zhou Xiaoxuan, center, weeps as she speaks to her supporters upon arrival at a courthouse in Beijing, Wednesday, December 2, 2020. Zhou, a Chinese woman who filed a sexual harassment lawsuit against a TV host, told dozens of cheering supporters at a courthouse Wednesday she hopes her case will encourage other victims of gender violence in a system that gives them few options to pursue complaints. (Photo by Andy Wong/AP Photo)

Three Chinese soldiers at the time of a civil war in China. (Photo by General Photographic Agency/Getty Images). 1922

An army dog stands up as retiring soldiers salute their guard post before retirement in Suqian, Jiangsu province, China on November 29, 2017. (Photo by Reuters/China Stringer Network)