Dziga Vertov "proclaimed the primacy of the camera itself (the 'Kino-Eye') over the human eye ... He called the 23 newreels he directed between 1922 and 1925 Kino-Pravda, 'pravda' being not only the Russian word for the truth but also the title of the official party newspaper."[cit]

"The art manifesto has been a recurrent feature associated with the avant-garde in Modernism. Art manifestos are mostly extreme in their rhetoric and intended for shock value to achieve a revolutionary effect."[cit]

For example, from the "Manifesto of Futurism"[cit]:

1. We intend to sing the love of danger, the habit of energy and fearlessness.
2. Courage, audacity, and revolt will be essential elements of our poetry.
3. Up to now literature has exalted a pensive immobility, ecstasy, and sleep. We intend to exalt aggressive action, a feverish insomnia, the racer's stride, the mortal leap, the punch and the slap.

See more manifestos.