During the 1960s, there was a tremendous amount of unrest and dissatisfaction, as protests and uprisings occurred in America as well as in Europe. As rebellions against political establishments continued, modern art was experiencing the aftereffects of the pop movement. Artists began to explore areas that strained the tolerance of art patrons, and the definition of art stretched to include conceptual and earth works. The Adventure of Modern Art: The Sixties: The Art in Question also discusses the first appearance of computer graphics and its affects on art. ~ Alice Day, All Movie Guide