He was certainly an inspiration in the latter respect, but it is his writings that are timeless. The fanatical and violent hatred they’ve always elicited from the enemies of human progress, the spokesmen of a power-loving, money-worshipping misanthropy, is the most eloquent proof of their value.

The owner of the means of production, i.e., the capitalist, has control over more resources than the person who owns only his labor-power, which means he is better able to influence the political process (for example by bribing politicians) and to propagate ideas and values that legitimate his dominant position and justify the subordination of others. These two broad categories of owners and workers have opposing interests, most obviously in the inverse relation between wages and profits. This antagonism of interests is the “class struggle,” a struggle that need not always be explicit or conscious but is constantly present on an implicit level, indeed is constitutive of the relationship between capitalist and worker. The class struggle—that is, the structure and functioning of economic institutions—can be called the foundation of society, the dynamic around which society tends to revolve, because, again, it is through class that institutions and actors acquire the means to influence social life.

. The powerful in particular love to clothe themselves in the garb of moral grandeur. They insist that they’re invading a country in order to protect human rights or spread democracy and freedom; that they’re expanding prisons to keep communities safer, and deporting immigrants to keep the country safe; that by cutting social welfare programs they’re trying honestly to reduce the budget deficit, and by cutting taxes on the rich they only want to stimulate the economy. When journalists and intellectuals take seriously such threadbare, predictable rhetoric, they’re disregarding the lesson of Marxism that individuals aren’t even the main actors here in the first place; institutions are. The individuals can tell themselves whatever stories they want about their own behavior, but the primary causes of the design and implementation of political policies are institutional dynamics, power dynamics. Political and economic actors represent certain interests, and they act in accordance with those interests. That’s all.

via The Significance of Karl Marx