Protest art acts as an important tool to form social consciousness, create networks, operate accessibly, and be cost-effective. Social movements produce such works as the signs, banners, posters, and other printed materials used to convey a cause or message. Often, such art is used as part of demonstrations or acts of civil disobedience. These works tend to be ephemeral, characterized by their portability and disposability, and are frequently not authored or owned by any one person. The various peace symbols, and the raised fist are two examples that highlight the democratic ownership of these signs.