This is a new and annotated edition of "Sozialismus und Reaktion" (Socialism and Reaction) published in 1878 by Rudolf Virchow (1821-1902). It includes: * A comprehensive introduction on the author, historical background, book, and edition. * Extensive notes with explanations for uncommon and obsolete words as well as persons and historical background. * Additional material relating to the background. All texts are in German.