Alongside this utopian trend was one more critical of the concept of "proletarian justice", represented by Evgeny Pashukanis. A dictatorial trend developed that advocated the use of law and legal institutions to suppress all opposition to the regime. This trend reached its zenith under Joseph Stalin with the ascendancy of Andrey Vyshinsky, when the administration of justice was carried out mainly by the security police in special tribunals.[citation needed]