Trotskyism is the theory o Marxism as advocatit bi Leon Trotsky. Trotsky identified himsel as an orthodox Marxist an Bolshevik-Leninist, an supportit foondin a vanguard pairty o the proletariat, proletarian internaitionalism, an a dictatorship o the proletariat based on wirkin-cless sel-emancipation an mass democracy. Trotskyists are creetical o Stalinism, as thay oppone the idea o Socialism in Ane Kintray. Trotskyists an aa creeticize the bureaucracy that developed in the USSR unner Stalin.