Soviet "law" discarded entirely with the idea of punishing overt acts, focusing instead on the supposed motivations of those deemed innately threatening to the regime. Note also that the Soviet system was rigged to nullify exculpatory verdicts. Soviet prosecutors, like Federal prosecutors today, considered themselves entitled to "shift the theory of criminality" as needed in order to justify detention of political offenders.
-Will Grigg
http://lewrockwell.com/grigg/grigg-w252.html