who is el lissitzky?
He was a Russian artist, designer, photographer, typographer, polemicist and architect.
El Lissitzky
Lazar Markovich Lissitzky (, ; – December 30, 1941), known as El Lissitzky (, ), was a Russian artist, designer, photographer, typographer, polemicist and architect. 
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El Lissitzky [SEP] Introduction
Lazar Markovich Lissitzky (, ; – December 30, 1941), known as El Lissitzky (, ), was a Russian artist, designer, photographer, typographer, polemicist and architect. He was an important figure of the Russian avant-garde, helping develop suprematism with his mentor, Kazimir Malevich, and designing numerous exhibition displays and propaganda works for the Soviet Union. His work greatly influenced the Bauhaus and constructivist movements, and he experimented with production techniques and stylistic devices that would go on to dominate 20th-century graphic design. Lissitzky's entire career was laced with the belief that the artist could be an agent for change, later summarized with his edict, "das zielbewußte Schaffen" (goal-oriented creation).