Marx and Engels have been criticised on many counts, such as the fact that their theories do not give much thought to individual action, and that they give supremacy to economics as a mode of analysis above all else, for instance.

Source: https://indianexpress.com/article/explained/upsc-essentials-this-quote-means-the-proletarians-have-nothing-to-lose-but-their-chains-explained-8354789/

This is perhaps one of the most controversial and impractical of the propositions advanced by Marx and Engels because, in reality, competition is actually a natural element in every sphere and facet of human endeavor.

Source: https://www.lusakatimes.com/2023/05/14/fred-mmembes-outdated-views-on-job-creation/

To be sure, the classical Marxism of Karl Marx and Engels in the mid-nineteenth century had its origin in the critique of social science.

Source: https://monthlyreview.org/2023/06/01/engels-and-the-second-foundation-of-marxism/?utm_source=rss&utm_medium=rss&utm_campaign=engels-and-the-second-foundation-of-marxism