Post-revolution
After the October Revolution (1917), Malevich became a member of the Collegium on the Arts of Narkompros, the Commission for the Protection of Monuments and the Museums Commission (all from 1918–1919). He taught at the Vitebsk Practical Art School in the USSR (now part of Belarus) (1919–1922), the Leningrad Academy of Arts (1922–1927), the Kiev State Art Institute (1927–1929), and the House of the Arts in Leningrad (1930). He wrote the book The World as Non-Objectivity, which was published in Munich in 1926 and translated into English in 1959. In it he outlines his Suprematist theories.
In 1923, Malevich was appointed director of Petrograd State Institute of Artistic Culture, which was forced to close in 1926 after a Communist party newspaper called it "a government-supported monastery" rife with "counterrevolutionary sermonizing and artistic debauchery." The Soviet state was by then heavily promoting a politically sustainable style of art called Social Realism—a style Malevich had spent his entire career repudiating. Nevertheless, he swam with the current, and was quietly tolerated by the Communists.
Read more about this topic: Kazimir Malevich