With illicit forms of self-expression, it’s hard to logically explain why I’m such a proponent when clearly it’s both illegal and will need to be removed at the taxpayer’s/owner’s expense. Especially now, as I am training to be a conservator and taking a masonry conservation/architectural restoration course, I find it more and more difficult to justify my passion for an inherently illegal and aesthetically damaging mode of expression to my colleagues.

via Understanding the Urban Visual Landscape.