You have to have an avenue of addressing that problem for those who don't clean up the graffiti.

Every city needs a tool on this particular fight. The longer you leave graffiti on a building, the worse the situation will become.

Gray hair is God's graffiti.

In New York -- whose subway trains in particular have been "tattooed" with an energy to put our own rude practitioners to shame -- not an inch of free space is spared except that of advertisements.

They say it's graffiti; that's not graffiti,

Speak softly, but carry a big can of paint.