Dripping from bridges, scrawled across alleyway walls and tagged on garbage cans along busy streets, graffiti brings color and gives voice to unheard perspectives in many parts of Washington, D.C.

Miami's historic Wynwood neighborhood has become a tourist hotspot for taking pictures with the latest art installations painted on the walls. When local graffiti artist Pedro Amos would see visitors ...

In 2006, $5 million was spent on graffiti in Auckland, New Zealand, according to the New Zealand government's "How to Stop Graffiti Guide." If graffiti wasn't a problem, New Zealand could have used ...