The mass murder has caused many more reproductions of an image of Muhammad to be distributed than – I assume – any other in history.
Guevara, who played a significant role in the revolution that overthrew Cuba's dictator Fulgencio Batista before being executed aged 39 in Bolivia, has long had a presence far beyond far-left politics, mainly through the ubiquitous T-shirt reproductions of his handsome, bearded face.
Almost at once you could buy postcard reproductions of his works everywhere; posters were available of the newly familiar paintings and drawings.
After marrying Carl Apfel, they set up Old World Weavers, whose reproductions of antique fabrics became essential accessories for the smartest households, until the Apfels eventually sold the company and retired.
There's even a case to make that Mr Fairey is being ripped off: shoddy reproductions of his portrait are sold in T-shirt stores and on street corners across America.
Uniqlo, a Japanese clothing retailer, has improved the pulling-power of its 90,000-square-feet flagship store in New York by striking deals with Starbucks, to install a coffee shop on the premises, and with the nearby Museum of Modern Art, to feature reproductions of work by Andy Warhol and Jackson Pollock.
This has caught out a number of users of 3D printers, who have blithely made reproductions of popular merchandise.
In 1963 "Aggregation: One Thousand Boats Show" at the Gertrude Stein gallery featured a rowing boat filled with phallic sculptures installed in a room papered with 999 black-and-white photographic reproductions of the work.
More specialised photo printers have also added various shades of the primary colours to produce ever more faithful reproductions.
With "Circle of Animals", 12 gilded reproductions of 18th-century bronze zodiac heads, he nods to the country's ongoing debate about patriotism, repatriation and the value of national art.
There were photocopied reproductions of 1968 French protest posters, saying things like "Nous sommes le pouvoir", with English translations helpfully added to the bottom in little capital letters.
