Working Class consciousness (in other words envy and covetousness) runs into economics: “The Chamley-Judd Redistribution Impossibility Theorem” which tells us that redistribution from capitalists to workers is impossible, and trying to do so merely buggers the economy making everyone worse off.
This conflict between reality and ideology brings you nazism and communism.
The Chamley-Judd Redistribution Impossibility theorem is economists admitting Ayn Rand was right while trying to sound as if they are not admitting it. The economy needs savings, investment, and entrepreneurship. Entrepreneurs will arrange to get a good chunk of the wealth produced, and if you try to stop them, you will discourage, or altogether stop, savings, investment and entrepreneurship.
You try to distribute from the capitalists to the workers, and somehow it does not happen. Obviously an evil conspiracy. So you round up the usual suspects. Somehow, this fails to work. Obviously the conspiracy must be bigger than you thought. So you round up everyone vaguely connected to the usual suspects. And you wind up killing them.
Yes, there are perfectly real conspiracies, as the previous post reveals, and some of them, such as the one revealed in the previous post, contain a curiously large proportion of Jews, but this is not what causes economic differences between capitalists and workers. The usual object of conspiracy is political power. This causes economic inequality between people in political power and people out of political power, but other forms of inequality are more resistant to politics, and attempts to politicize other forms of inequality will have disastrous effects.
The inequality between Jewish tax farmers and the peasants had political origins and was reasonably answered by political measures against tax farming. The inequality between Jewish Estate managers and the people who worked on those estates, the inequality between Jewish money lenders and European borrowers, and the inequality between Jewish vodka merchants and Russian drunks did not have political origins, hence trying to remedy it results in you killing the Jews, not to mention capitalists, kulaks, foreign educated intellectuals, and whatnot. And after they are killed, your peasants are still screwed. Indeed they are even more screwed.
Hence successful official belief systems prohibit this fallacy. Believing it gets punished by social disapproval and exclusion from the levers of political power.