The wall is the gallery and permission is optional. Graffiti grows up, gets stencils, and ends up in the auction house anyway.
Still in copyright, so the museum shows it, not this pageCrack Is WackKeith Haring · 1986 · Harlem River Drive, New YorkSee it at the museum ↗Keith Haring · Crack Is Wack · 1986 · Harlem River Drive, New York
When
1980 to now
Where
New York, London, São Paulo
Who
Keith Haring, Banksy, Shepard Fairey, Lady Pink, JR