norton art gallery Street Art is definitely a popular form of art which is spreading quickly around the globe. You can find it on buildings, sidewalks and street signs. Street art has become a global culture and also art museums and galleries are collecting the work of street artists. Street art commenced very secretly because it is illegal to color public and private property without permission. People usually have different opinions about street art. Some believe that it is an offence yet others think it is a very beautiful new type of culture.