The fact of the matter is graffiti is out there in the real world, though most of us would prefer not to see it. If you are modeling an era where it is prevalent, then some layout builders, wanting to depict the "real world", will include it. Some of the members of this Forum have posted pictures of their creations of graffiti that look very real, which I am sure was their intent for creating it in the first place. To these individuals who create this form of art, I really don't think this has any negative impact to encourage those who break the law and deface other peoples' property.
Personally, I do not like it in the real world or in modeling. Just my opinion.
