Ultra-leftism
In Marxism, ultra-leftism encompasses a broad spectrum of revolutionary Marxist currents that are anti-Leninist in perspective. Ultra-leftism distinguishes itself from other left-wing currents through its rejection of electoralism, trade unionism, and national liberation. The term is sometimes used as a synonym of left communism. "Ultra-left" is also commonly used as a pejorative by Marxist–Leninists and Trotskyists to refer to extreme or uncompromising Marxist sects.