United States government was behaving almost exactly as Karl Marx had predicted

In “Robber Barons and Rebels,” Howard Zinn writs that the United States government was behaving almost exactly as Karl Marx had predicted by “pretending neutrality to maintain order, but serving the interests of the rich” (People’s History, p. 258). Use examples from both chapters to support this contention. Do you agree or disagree with Zinn? Explain.