Street art, also called “post-graffiti,” is art that is done on the street without being considered as “graffiti.” Street art takes art out of the traditional context of an art museum or gallery. Methods used for street art include spray paint, stencil, airbrush, mosaic, and even video and installation. In comparison to graffiti, street art is more based on graphic art rather than tagging. Street art often makes a political statement and is used for social activism as it displays messages to the public on the street. Most cities around the world have examples of this urban art, and cities such as Berlin, London, and Sao Paulo are particularly known for having internationally well-known street artists decorating their urban areas. Barbara Kruger and Banksy are among the several celebrated artists who began by creating street art.