Should graffiti be considered an art?

First, a quick
refresher on what graffiti is: graffiti is unauthorized writing/drawings/spray paint art on
public spaces like walls, streets, or buildings. It can be as simple as someone marking their
initials in Sharpie on a the wall of the Post Office, or as elaborate as a
stencil-and-spray-paint href="http://www.bipgraffiti.com/cgi-sys/suspendedpage.cgi">portrait of
Anne Frank on the side of a restaurant.

So, should graffiti be considered an
art? People have differing opinions. Some people view graffiti as a nuisance, ugly,
inappropriate, or vandalism, because usually graffiti artists don't ask the permission of the
institution they paint. Graffiti may...