Young demonstrators (many shirtless) shout and cheer as they overturn a truck trailer in the Reflecting Pool on the Mall facing the Washington Monument during the “Honor America Day Smoke-In” thrown by marijuana activists to protest the official “Honor America Day” ceremonies being held at the Lincoln Memorial, Washington, DC, July 4, 1970. (Photo by David Fenton/Getty Images)

“Joan Miro i Ferra (April 20, 1893 – December 25, 1983) was a Spanish Catalan painter, sculptor, and ceramicist born in Barcelona. Earning international acclaim, his work has been interpreted as Surrealism, a sandbox for the subconscious mind, a re-creation of the childlike, and a manifestation of Catalan pride. In numerous interviews dating from the 1930s onwards, Miro expressed contempt for conventional painting methods as a way of supporting bourgeois society, and famously declared an “assassination of painting” in favour of upsetting the visual elements of established painting”. – Wikipedia

Photo: Joan Miro's, grandsons, Emilio Fernandez Miro and Joan Punyet Miro pose beside Personnage (1970) in the Yorkshire Sculpture park on March 14, 2012 in Wakefield, England. Yorkshire Sculpture Park stages the first major UK survey of sculpture by Spanish artist Joan Miro. (Photo by Bethany Clarke/Getty Images)

Beyonce Knowles performs at the Glastonbury Festival at Worthy Farm, Pilton on June 26, 2011 in Glastonbury, England. The festival, which started in 1970 when several hundred hippies paid 1 GBP to watch Marc Bolan, has grown into Europe's largest music festival attracting more than 175,000 people over five days. (Photo by Dave Hogan/Getty Images)

Actor Mike Lane, standing six feet 10 inches in his stocking feet, makes a perfect monster as he carries actress Nancy Knox down the stairs into Frankenstein's dungeon, February 28, 1958. They have featured parts in the upcoming Boris Karloff movie “Frankenstein 1970”. (Photo by David F. Smith/AP Photo)

Tourists pose for a selfie in Cancun, October 13, 2015. Cancun's transformation in the 1970s from a small Caribbean fishing village into a strip of nightclubs and high-rise hotels has reduced biodiversity and polluted water resources as infrastructure struggles to keep up. (Photo by Edgard Garrido/Reuters)

Women dancing at the disco club Xenon in New York City, USA in 1978. Xenon was a popular disco in Manhattan in the late 1970s and early 1980s. It was the only nightclub popular enough to compete with Studio 54. (Photo by Waring Abbott/Getty Images)