In recent years, there has been a remarkable increase in interest in revolution and social unrest. This collection of essays by the distinguished historian and Marxist Eric Hobsbawm is a commentary and critical review of the revolutionary movements and ideas that dominated the 20th century and remain critically relevant. The essays are a broad exploration of related topics, including the history of communism, the impact of Marxism, insurrections, military coups, and guerrilla warfare, as well as the role of intellectuals. This updated edition offers new insights into anti-communist polemics and the Spanish Civil War. Written with clarity and masterful confidence, Eric Hobsbawm's essays are essential for a true understanding of both the history of the 20th century and the pattern of events today.