I don't think you should have to pay to look at graffiti. You should only pay if you want to get rid of it.
BanksyOn Painting Rats, and the Glorification of Them. They exist without permission. They are hated, hunted and persecuted. They live in quiet desperation amongst the filth. And yet they are capable of bringing entire civilizations to their knees. If you are dirty, insignificant, and unloved then rats are the ultimate role model.
Banksy