The book cover says: “Politics 101”. The man is wearing the distinctive uniform of the Red Army. Red troopers inherited it from the Imperial army in WW1. The nationalist designers made a pointy hat to mimic the medieval helms of Rus warriors. The red razgovóry across the chest also mimicked the ethnic decoration from the pre-Imperial era of Muscovy.
The man’s boots are most probably taken from the military supplies sent by the Allied powers to the Czar and the Provisional Government, and taken by local Soviet troops from busted warehouses around the country. The wall is adorned by a portrait of Karl Marx. The phonograph and the sofa were most probably confiscated from counter-revolutionary elements for the benefit of exploited masses.