Art has lots of different forms. However, its evaluation has become especially problematic since the twentieth century when controversial art forms such as graffiti became popular. Although graffiti is often regarded as a new form of art worthy of display in galleries, its value is still highly contested.
On the one hand, works produced by graffiti artists demonstrate a broad spectrum of personal and cultural expression therefore it is the way for people to express their talent. In addition, graffiti like any other art work takes vision, planning as well as lots of efforts. What is more, in many ways viewing graffiti art is very much like viewing contemporary art in a gallery and it is appreciated by many people.
On the other hand, graffiti is often seen as vandalism because instead of canvas graffiti artists choose train cars, bridges or public walls, which makes our cities look really ugly and run-down. Moreover, most of the graffiti you see on walls is a collection of swear words, gang names or just silly drawings. For many people graffiti is often associated with crime and violence.
To sum up, graffiti can be called an art form as long as artists get permission from those whose property might be used as canvas. In my opinion, people paint on public things because they have nowhere else to express their talent. I strongly believe city authorities should create special places for graffiti artists where all people will be able to appreciate this wonderful art form.