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Technique of painting murals on wet plaster took root in Italy
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Mexican muralism was the promotion of mural painting starting in the 1920s, generally with social and political messages
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Modern graffiti seems to have appeared in Philadelphia in the early 1960s, and by the late sixties it had reached New York. In the photo a Bansky’s murales
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People began writing their names, or ‘tags’, on buildings all over New York
