Practical need, self-interest . The god of the Jews has been secularized and has become the god of this world. The bill of exchange is the real god of the Jews. His god is only an illusory bill of exchange. On the Jewish Question Aside from invective laced with anti-Semitic undertones, Marx made several specific claims about the evils of capitalism.
Capitalism drives workers' wages down to the subsistence level.
The average price of wage-labour is the minimum wage, i.e., that quantum of the means of subsistence, which is absolutely requisite to keep the labourer in bare existence as a labourer. While Marx lived and wrote during a era when the standard of living of workers was rising at unprecedented rates in the world's capitalist centers in Britain, the United States, France, and Germany. Instead of noting these remarkable advances and trying to figure out how to magnify them as much as possible, Marx simply denied that improvement was occurring. While capitalism brings enormous economic progress, it is fundamentally unstable. Marx thought that wealth would become constantly more concentrated in the hands of a small number of capitalists, which would make the antagonism between workers and bourgeoisie ever clearer and sharper.