[Corazoor]

As others have already stated, "Das Kapital" itself is a study and criticism of capitalism, and does not present much in terms of alternatives or "solutions".

It is worth noting that both Marx and Engels were in favour of democracy, even going as far as saying that the actual means of production should be democratized. Both would probably be appalled by what became of their theories under Stalin and Mao...

Also, as Marx got older he got less and less political active, there is even a letter where he refused to be seen as a leading figure of the communist movement. Das Kapital is from this later period of his life, and subsequently very scant on noneconomic politics...