Marxism-Leninism Vs. Revisionism is a book written by William Z. Foster. The book explores the differences between Marxism-Leninism and Revisionism, two opposing ideologies that emerged in the Soviet Union during the 20th century. Marxism-Leninism is a political theory that combines the ideas of Karl Marx and Vladimir Lenin, advocating for a socialist society led by a vanguard party. Revisionism, on the other hand, is a movement that seeks to modify...