In fact many graffiti artists are or were hip-hop artists. I consulted Beat Factory because their name and logo has appeared on a graffiti wall. Graffiti covers an enormous field. I have classified graffiti under several headings. Beat Factory uses graffiti to advertise hip-hop artists and album.
Positive graffiti adds to the environment.
Graffiti artists work on walls facing public transit because it gives their work substantial visibility. Some of the best pieces I have found are along Scarborough's rapid transit. Graffiti is used to mark another gangs turf. This type of graffiti is also called art crime . While positive graffiti enhances an area, negative graffiti degrades an area, causes people to fear their surrounding, thus the crackdown on graffiti.