Avant-garde art is a broad term encompassing the most groundbreaking, radical and progressive art of the 19th and 20th century.
Avant-Garde – Art That Breaks Barriers - Artland Magazine
Russian avant-garde artwork scrutinized at Istanbul museum
What is the meaning of 'avant garde'? How can it be used in a sentence? - Quora
Understanding the Significance of Avant-garde
Avant-Garde: The Lenin Years – musings-on-art
The New Art: Kazimir Malevich and the Russian Avant-Garde
Avant-Garde Art - Modern Art Terms and Concepts
A-level: British and French avant-garde
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Avant Garde kunst – Revolutionaire vernieuwing – Abraham Art
What is Avant-Garde Art?
Avant Garde Paintings — Jose Art Gallery
What is Modern Art — Definition, History and Examples
Experts accuse museum of misleading visitors over 'highly questionable' avant-garde art — New East Digital Archive