The term street art or guerrilla art is used to designate unsanctioned forms of art, created and exhibited in public places. Negative connotation attributed to graffiti art has lead to coining of a definition that distinguishes between guerrilla art that often is used to communicate complex messages, and other forms that might resemble it the term excludes art created for corporate purposes, territorial graffiti and vandalism. Learn more about the art form that is created to introduce freely accessible art conveying social critique in this book.