Graffiti
Graffiti is seen by many as vandalism. A “bad” act committed by “bad” people who have no respect for other people’s property. In some cases this is true, but it is not necessarily true of all cases. Sometimes graffiti can be art.

Those who write nonsense on bathroom walls or write who loves or who hates who on bus stops or walls are not artists. These are the people who do not have respect for other people’s property. There is no skill in doing it.

They are those however who do make graffiti artistic and that make a living doing so. Banksy for example is a graffiti artist who has done many famous works in public places. These works are admired by people all around the world and in some cases councils pay to have the works preserved rather than treat them as vandalism. His works can be found at http://www.banksy.co.uk/.