I am on travel, so there is plenty of time to listen to windbags.
Revolution and Counter-Revolution, or Germany in 1848, outlines the communist reaction to a tepid revolution(s) that didn't succeed. These events correspond to the transition from feudalism (Lord-Surf) relations to capitalist (Bourgeoisie-Proletariat). The main lessons drawn by Marx and Engels are that revolutions must be all out and there must be no scrupling about legalities and niceties of any kind. Even a suicidal revolt that leads to a defeat is beneficial, since those who survive will be permanently harboring feelings of revenge. Finally, they see a middle class revolt as being that of useful idiots who are clueless in the unlikely event that they actually get power, since they will set up a system of checks and balances and seek a consensus. Instead, the communists don't seek a revolution, but to revolt against the revolution. All this helps me understand much better what Trotsky was ranting about in his works. So what is it that they want to accomplish? Stamping out religion, monogamy, and classes are clearly stated, but what are they to be replaced with?
Socialism: Utopian and Scientific, by Engels, 1880.
This is a short history of the invention of industrial machines, and how they transformed manufacturing in several waves. That productivity increased by orders of magnitude in the weaving industry is noted, but Engels is one to note that the glass is half empty. Billions of yards of cloth were produced employing thousands of people, but the output apparently was exported out of the galaxy, since we have no idea who benefited from the cheap product. Some things are noted in passing that beg to have Engels stopped for some cross examination. For example, he notes that a factory requires an officer core in the same manner as army. Yet he only leaves rooms for a bottom class and a top class that is idle. There are no traders nor are there agents looking for markets nor are there sailors or trains or ships in his "scientific" socialist analysis. All Engels sees is that there is a wage given to the worker who adds value, and an idle industrialist who sells that work at a higher price. Subtracting the two prices, we obtain the exact value of the oppression, according to communist accounting.
We must also consider boom and bust cycles, which have continued into our current era. When there is an over supply, factories clearly need to be shut and workers cut. This is an oppression too, even if the industrialist goes bankrupt. The only solution proposed is to confiscate the property of the rich and give it to the poor.