Trotskyism

Trotsky and his supporters organized into the Left Opposition and their platform became known as Trotskyism. Stalin eventually succeeded in gaining control of the Soviet regime and Trotskyist attempts to remove Stalin from power resulted in Trotsky's exile from the Soviet Union in 1929. During Trotsky's exile, world communism fractured into two distinct branches: Marxism-Leninism and Trotskyism. Trotsky later founded the Fourth International, a Trotskyist rival to the Comintern, in 1938.

Trotskyist ideas have continually found a modest echo among political movements in some countries in Latin America and Asia, especially in Argentina, Brazil, Bolivia and Sri Lanka. Many Trotskyist organizations are also active in more stable, developed countries in North America and Western Europe. Trotsky's politics differed sharply from those of Stalin and Mao, most importantly in declaring the need for an international proletarian revolution (rather than socialism in one country) and unwavering support for a true dictatorship of the proletariat based on democratic principles.

However, as a whole, Trotsky's theories and attitudes were never accepted in worldwide mainstream Communist circles after Trotsky's expulsion, either within or outside of the Soviet bloc. This remained the case even after the Secret Speech and subsequent events critics claim exposed the fallibility of Stalin.

Some criticize Trotskyism as incapable of using concrete analysis on its theories, rather resorting to phrases and abstract notions.