Street Graffiti

Many graffiti artists see legal advertising as no more than 'paid for and legalised graffiti' and have risen against mainstream adverts. The graffiti research lab crew have gone on to target several prominent adverts in New York as a means of making a statement against this criteria.
Offensive graffiti
Graffiti can also be used as an offensive expression. This form of graffiti can be difficult to locate, as it is mostly removed by the local authority (as councils which have adopted strategies of criminalization also strive to remove graffiti quickly'). Therefore, existing racist graffiti is mostly more subtle and at first sight not easily recognized as "racist". It can then only be understood if one knows the relevant "local code" (social, historical, political, temporal and spatial), which is seen as heteroglot and thus an 'unique set of conditions'.