Street art combines all forms of art that are expressed on the street, usually illegally, and describes the work of people who have developed a mode of artistic expression by using various techniques such as templates, posters, stickers, murals and graffiti among the most important, in a new form of communication through text, content and social opinion.
Main aim of the Street art is, by integrating its elements in high-traffic public places, to surprise the audience and usually to embed a subversive message that criticizes society with irony and invites social struggle, political criticism or simply to reflect.
It’s called also graffiti art and we can find examples dating back to Ancient Egypt, Ancient Greece, and the Roman Empire. Especially among the Romans it was very common habit to write occasionaly on walls and columns where many inscriptions were found in Vulgar Latin with political slogans, insults and declarations of love.
The International Museum of modern and contemporary art “Tate Modern” in London has made several street art exhibitions and now is selling one of the best analyses of this trend, the book “Street Art- The Graffiti Revolution“, which discusses in depth the phenomenon of urban art.