GRAFFiTi... Vandalism or Art?

Graffiti

Writing or drawings scribbled, scratched, or sprayed illicitly on a wall or other surface in a public place; form of art and expression, the world is each ones canvas

Graffiti should not be confused with vandalism, which is instead crude marking or destruction, the aim of which is to cause damage to property, regardless of appeal. Graffiti is just the opposite. IF GRAFFITI WASNT ART, THEN WHY WOULD WRITERS SPEND HOURS AND HOURS SKETCHING AND PRACTICING? Also, there are things that are considered off limits and non ethical, and are not to be touched. some of these things include residential property, churches or places of worship, cemeteries, cars (unless obviously abandoned). These are only the basics and different writers may restrict themselves from other things.
Graffiti is 90% of the time NOT GANG RELATED. Gangs, however, are not to be confused with crews. crews are a group of writers. That's it. There are no drugs or crime (other than graffiti) involved with the crew.