Write a 500-word definition essay of contemporary art.

Contemporary art is the art of today, produced in the second half of the 20th century or in the 21st century. Contemporary artists work in a globally influenced, culturally diverse, and technologically advancing world. Their art is a dynamic combination of materials, methods, concepts, and subjects that continue the challenging of boundaries that was already well underway in the 20th century. Diverse and eclectic, contemporary art as a whole is distinguished by the very lack of a uniform, organizing principle, ideology, or "-ism". Contemporary art is part of a cultural dialogue that concerns larger contextual frameworks such as personal and cultural identity, family, community, and nationality.My Modern Met says contemporary art is thought to have begun with Pop Art, pioneered by artists such as Andy Warhol and Roy Lichtenstein and defined by its interest in portraying mass culture.