Street artists are individuals who create art in public spaces, often using materials like spray paint, chalk, or stencils. Their work can include murals, graffiti, and installations, and it often reflects social issues, personal experiences, or cultural commentary. Street art is typically created without official permission, making it a form of expression that challenges traditional art boundaries. Many street artists gain recognition for their unique styles and messages, with some becoming famous worldwide. Notable figures in this movement include Banksy, known for his thought-provoking stencils, and Shepard Fairey, who gained fame for his iconic Obey Giant campaign. Street art can transform urban environments and engage communities.