Friedrich Engels was a German philosopher, political theorist, historian, journalist, and revolutionary socialist. He was also a businessman and Karl Marx's closest friend and collaborator.
Engels in 1879
The Engels family house at Barmen (now in Wuppertal), Germany
An early photograph of Engels, thought to show him aged 20–25 (c. 1840–45)
La Maison du Cygne (the Swan Tavern), Brussels, where The Communist Manifesto was written
Revolutionary socialism is a political philosophy, doctrine, and tradition within socialism that stresses the idea that a social revolution is necessary to bring about structural changes in society. More specifically, it is the view that revolution is a necessary precondition for transitioning from a capitalist to a socialist mode of production. Revolution is not necessarily defined as a violent insurrection; it is defined as a seizure of political power by mass movements of the working class so that the state is directly controlled or abolished by the working class as opposed to the capitalist class and its interests.
Portrait of Karl Marx in 1875
Vladimir Lenin, founder of the Soviet Union and the leader of the Bolshevik party.
Leon Trotsky, founder of the Red Army and a key figure in the October Revolution.