▁by ▁sch ol ars ▁primarily ▁in ▁the ▁German - language ▁literature . ▁Werner ▁S omb art ▁stated ▁in ▁ 1 8 9 6 ▁( two ▁years ▁after ▁Capital , ▁Volume ▁III ▁was ▁published ) ▁that ▁" We ▁want ▁a ▁psych ological ▁foundation ▁of ▁social ▁events ▁and ▁Marx ▁did ▁not ▁bother ▁about ▁it ". ▁ ▁Soviet ▁Union ▁The ▁historian ▁She ila ▁Fitz pat rick ▁has ▁recorded ▁how , ▁in ▁the ▁Soviet ▁Union , ▁" The ▁the atr ical ▁met ap hor ▁of ▁mask s ▁was ▁u bi quit ous ▁in ▁the ▁ 1 9 2 0 s ▁and ▁' 3 0 s , ▁and ▁the ▁same ▁period ▁saw ▁a ▁flow ering ▁of ▁that ▁peculiar ▁form ▁of ▁political ▁the ater : ▁the ▁show ▁trial ." ▁Those ▁who ▁supported ▁the ▁revolution ▁and ▁its ▁commun ist ▁leadership ▁were ▁polit ically ▁defined ▁as ▁" pro let arian " ▁and ▁those ▁who ▁opposed ▁it ▁were ▁defined ▁as ▁" bour ge ois ". ▁The ▁enemies ▁of ▁the ▁revolution ▁had ▁to ▁be ▁h unted ▁down , ▁un mask ed , ▁and ▁forced ▁to ▁conf ess ▁their ▁counter - re volution ary ▁( i . e . ▁sub vers ive ) ▁behaviour , ▁whether ▁real ▁or ▁imag ined . ▁It ▁led ▁to ▁considerable ▁political ▁par ano ia . ▁Ab andon ing ▁b our ge ois ▁and ▁primitive ▁norm s , ▁and ▁becoming ▁a ▁cult ured , ▁social ist ▁citiz en , ▁was ▁" ak in ▁to ▁learning ▁a ▁role ". ▁In ▁the ▁ 1 9 2 0 s , ▁the ▁Russian ▁Association