The proletariat uses the State not in the interests of freedom but in order to hold down its adversaries, and as soon as it becomes possible to speak of freedom the State as such ceases to exist.

Z. Engels also wrote some important newspaper articles such as "The Campaign for the German Imperial Constitution" which he finiFriedrich Engelsd in February 1850 and "On the Slogan of the Abolition of the State and the German 'Friends of Anarchy'" written in October 1850. Brussels
From 1845 to 1848 Engels and Marx lived in Brussels spending much of their time organizing the city's German workers.

Additionally Engels organized Marx's notes on the "Theories of Surplus Value" and this was later publiFriedrich Engelsd as the "fourth volume" of Capital. In 1848 he co-authored The Communist Manifesto with Karl Marx and later he supported Marx financially to do research and write Das Kapital.