Graffiti on public and private property is a blighting factor which not only depreciates the value of the property which has been the target of such malicious vandalism, but also depreciates the value of the adjacent and surrounding properties, and in so doing, negatively impacts upon the entire community. The City Council finds and determines that graffiti is a nuisance and unless it and other inscribed material is removed from public and private properties, it tends to remain.