Mural making, dating back to prehistoric times, has been used for worshipping and decorative purposes for most of its history. With the turn of the century, however, mural making has also become a significant tool for social justice and education. This change has been brought on by the shift in cultural and political views that began in the early 20th century. During this time, there were also radical art movements that truly challenged what is considered art, culture, beautiful, etc. Two of such movements, Mexican Muralism and the Harlem Renaissance, utilized mural making that redefined the art and would later influence the Community Mural Movement of the 20th century.