The Impact of the Graffiti in the Society.

Acording to what I see in some images and some countries, i consider that the graffiti's have a true role in the society, not only as an art role such as nice paintings or style letters, but as an opinion role, ¿What do people think about some important topic?, the artists (because they are) use this tool to communicate some ideas that the people have of something, like the politics, the religion, the war or the peace, etc. So in my judgement, Argentina have the best graffitis in their walls and the best way of use them as a communication tool, they are free not just to paint, but to express.