Graffiti is a kind of art?

Graffiti (plural of graffito: "a graffito", but "these graffiti") are writing or drawings that have been scribbled, scratched, or painted, typically illicitly, on a wall or other surface, often within public view.Any passerby in an urban cityscape has observed the colorful, provocative, illegal "eyesore" that is graffiti. Although many consider the spray-painted pieces a nuisance, graffiti has been gaining recognition from the art world more and more as a legitimate form of art.