James Patrick Cannon was an American Trotskyist and a leader of the Socialist Workers Party.
Cannon and Felix Morrow, with a bust of Trotsky.
Trotskyism is the political ideology and branch of Marxism developed by Russian revolutionary and intellectual Leon Trotsky along with some other members of the Left Opposition and the Fourth International. Trotsky described himself as an orthodox Marxist, a revolutionary Marxist, and a Bolshevik–Leninist as well as a follower of Karl Marx, Frederick Engels, Vladimir Lenin, Karl Liebknecht, and Rosa Luxemburg.
Leon Trotsky
The leaders of the Trotskyist Left Opposition in Moscow, 1927 (sitting: Leonid Serebryakov, Karl Radek, Leon Trotsky, Mikhail Boguslavsky and Yevgeni Preobrazhensky; standing: Christian Rakovsky, Yakov Drobnis, Alexander Beloborodov and Lev Sosnovsky)
Portrait of Trotsky
The Soviet of Workers' Deputies of St. Petersburg in 1905, Trotsky in the center. The soviets were an early example of a workers council.