Constructivists proposed to replace art’s traditional concern with composition with a focus on construction 

Objects were to be created not in order to express beauty, or the artist’s outlook, or to represent the world, but to carry out a fundamental analysis of the materials and forms of art, one which might lead to the design of functional objects. 

Design for the Monument to the Third International (1919-20) 

Artist: Vladimir Tatlin 

Pure Red Color, Pure Yellow Color, Pure Blue Color (1921) 

Artist: Alexander Rodchenko 

(SOURCE – https://www.theartstory.org/movement/constructivism/)