The art movement of expressionism (in film, theater, painting, and the other arts) turned away from realist representation and focused on the unconscious and irrational sides of human experience. Weimar-era German expressionist movies, such as The Cabinet of Dr. Caligari (1920), challenged the realist drive of traditional film by concentrating on the darker sides of human experience and representing irrational forces through the use of distorted and expressive lighting, set, and costume design.