"proletarian nights" are an ongoing collection of drawings, illustrations, tattoos, designs, prints and more, all made during after-work hours .
"those nights wrested from the normal sequence of work and sleep. they were imperceptible, one might almost say inoffensive breaks in the ordinary course of things, where already the impossible was being prepared, dreamt and seen."
-- Jacques Ranciere, Proletarian Nights: The Workers' Dream in Nineteenth-Century France
see more here.
