Many important periods of the history of animation arose directly from and are part of the radical modernist wave with the epicentre in the USA that bombarded the world of animation after World War II and the influence of which is still felt today. Explaining the origin of American modernist animation in propaganda and commercial film, as well as in eminent artistic aspirations for artistic freedom, Ajanovic describes the main characteristic and the importance of production of the UPA animation studio, i. e. John Hubley, Stephen Bosustow and other leading figures of animation, placing their work within the production frames of the epoch and stressing their importance. By doing so, he argues in favour of the term modernist animation – a term that is much more precise and useful when analysing the mentioned phenomena – instead of the term reduced or stylized animation.