True Story of an Ingenious Hoax:

In the 1930s Troy Hugh, a successful artist,
became disenchanted with the elitism of
high society. He was asked to produce a
painting for a charity auction. When he
heard that no one "common" would be granted
entry, he worked on some pieces and displayed
them around the exterior of the patron's
mansion. They were all painted signs that
read "picnic parties welcome," "free merry-go-
round for the children," and "family parties welcome."
The patron was horrified to find her mansion
bombarded with children and adults from a
different caste.