Some people really hate graffiti! Cannot think why?

If you are going to make a open public statement, graffiti seems to get the message across. This is probably because some people think of it as urban art, while others think of it a pure vandalism and that means no matter where the image is, it is bound to make an impact. This piece of urban art found on Design Pix sort of crosses the boundaries of vandalism, art and graffiti, if this was your wall what would you think about it?

Some people really hate graffiti! Cannot think why?