“Any unauthorized inscription, word, figure, painting, design, label, marking, symbol, or other defacement that is marked, etched, scratched, engraved, drawn, painted, sprayed, or otherwise affixed on any surface of public or private property, either natural or manmade; to the extent that the graffiti was not authorized in advance by the owner or occupant of the property, or, despite advance authorization, is deemed a public nuisance. The owner or occupant cannot authorize a public nuisance.”
Renton Municipal Code Title 6, Chap. 29