Thanks for sharing these quotations from Marx and Engels. They of course wrote during the great revolutionary year of 1848 that also saw the Seneca Falls Convention for women's rights in the United States.
I think the greater question is what lessons have we learned since then that can alleviate the worst abuses of capitalism without "killing the goose that lays the golden egg."
Strengthening the social welfare safety net, improving education, and expanding access to health care would go a long way towards alleviating the crisis in the United States. Some form of basic unversal income may be necessary. Leaders like Theodore Roosevelt, Wilson, FDR, Lyndon Johnson, and others all recognized this point. Now we need to learn how best to respond in the twenty first century.