Trotskyism
Trotskyism is the form of communism that is based on the ideas of Leon Trotsky. Trotsky described himself as an "orthodox Marxist". This is a different way of seeing the ideas of Karl Marx than the way other communists like Mao Zedong and Joseph Stalin saw them. The biggest difference is in Trotsky's idea that there needs to be an international "permanent revolution". Permanent revolution is the idea that proletarian revolution needed to spread in countries worldwide, even where capitalism was not as advanced as only the proletarian revolution could carry out the tasks of the unfinished bourgeois revolutions in these countries. This is different to the Stalinist idea of trying to preserve a single nation's revolution from within. Trotsky also supported a less authoritarian government and more democracy.

The largest Trotskyist organizations today are the Reunified Fourth International, International Socialist Tendency, International Marxist Tendency, the International Communist League, and the Committee for a Workers' International.
Trotskyism Media
Leon Trotsky, after whom Trotskyism is named
The Soviet of Workers' Deputies of St. Petersburg in 1905, Trotsky in the center. The soviets were an early example of a workers council.
Leon Trotsky's original pamphlet "Fascism: What it is and how to fight it" argued for the tactical method of a united front to counter the rise of Nazi Germany
Trotsky with Vladimir Lenin and soldiers in Petrograd
Antonov-Ovseenko was the first former Trotskyist to be posthumously rehabilitated
Workers' Left Front in Argentina in December 2017