(This is part of the Introduction to Marxism series. See here.)
The most important reason that I think the contemporary left could do with more input from Marxism is that the contemporary left doesn't have nearly enough to say about class, whereas Marxism makes class central. Upon hearing this kind of statement people often worry, "What do you mean class is central? Are you saying that gender, race, and sexuality - for example - are any less important?" But that's to misunderstand what's meant by the centrality of class: it isn't that class matters more than gender, race, and so on. And it certainly isn't that class exploitation involves more suffering than sexual or racial oppression, as though some computer programmer in Woking had a better claim to be numbered amongst the wretched of the earth than a Saudi woman. No, the Marxist claim is that understanding class has a certain priority with respect to understanding over non-class oppressions; you understand a society in a particularly intimate way if you understand its class relations. This is important, of course, if you want to change society, and so class exploitation ought to be of interest not least if you want to fight sexism, racism, or homophobia.
The reason Marx thinks this was touched upon in the first post of this series, historical materialism: the way we reproduce ourselves as a species, that is, the way we produce the things we need, constrains the way we can organise society. And class quite simply is the general way we organise production socially, the way a society contains different groups who in different ways own or control the means to produce the things we need. From this it ought to be clear that class, for Marx, is not a matter of accent, or of what kind of sauce you put on your chips, or even of how much money you have. The question is simply: do you own the means to produce things for human need (beyond your own domestic needs)?
Before capitalism and in the early days of capitalism the answer to this question might well have required a little thought: perhaps you might have your own small-holding, but also work the local baron's land, or perhaps you might do piece-work for a local industrialist in your cottage. Under developed capitalism, however, things are much simpler: the vast majority of the population do not own factories, companies, sufficient shares or other accumulated wealth to be able to survive without working (or receiving state benefits in countries where these exist). Nor do they own land, or significant amounts of tools or resources. These people, most of us, the proletariat in Marx's language, must sell our capacity to work to others in order to survive. The bourgeoisie, meanwhile, own the means of production and lay claim to the profits made in their factories, farms, call centres, and computing labs.
Here's the rub: those profits, to which the bourgeoisie lays claim, result from the labour of the proletariat. Capitalism in other words is an exploitative system; to be a proletarian is to be exploited. Now, I have no intention of going into the details of Marx's theory of value and exploitation, mainly because this is an introduction, but also because it is laid out clearly in the first volume of Capital and explained well by David Harvey's free on-line course. Basically, though, the idea is that value is produced by human labour and that profits are surplus value, the value produced by labourers minus the value returned to them in the form of wages (which will need to be enough in the long-run to allow the workers to survive) and that required to keep firms ticking over in terms of plant, machinery, and so on (all of this being produced by another group of workers, working for another capitalist).
This has a number of consequences. Three seem to me particularly important for the current left:
Economic theory. Marx's account of exploitation is the cornerstone of his economic theory. A systematic grasp of economics is not a strong point on the left, and that is a failure of ours. Yet we have our own tradition of economic thought, and we should get better acquainted with it. Michael Roberts' blog is a good place to start.
Immiseration. It needn't be the case that workers are poor, and many are clearly not. There are all sorts of reasons for this. The exploitative nature of capitalist work, however, builds a tendency to make workers as poor as is compatible with them still working into the nature of production. The reason for this is quite simple: value that goes to workers as wages does not go to bosses as profit. Marx's theory allows us to link our proper outrage at sweatshops and zero-hours contracts to the functioning of the system.
Conflict. The fact that value that goes as wages can't go as profits and vice versa means that conflict is built into the capitalism system itself. My interests contradict my bosses' interests, and that is built into the way things are. Class struggle is not something dreamed up by hot-heads or preached by demagogues, it happens in every supermarket, workshop, and college every day of the year. Marxism is not about arguing for class war, it is about recognising that class war is already with us. Once we have done that, the next thing to recognise is that the only way to abolish class war is to win it, to do away with capitalism and with class-based society. I'll say more about how Marx thought that was possible in a later post.
There's a lot more that could and should be said about class and exploitation: what about the sizeable number of public sector workers in contemporary capitalist economies, where do they fit in? What about those members of the working class who are unemployed or undocumented? What about work done illegally? As I said above, though, this is supposed to be an introduction. With that in mind, one further comment - I suggested in the first post that Marx was a therapeutic thinker, whose work is best read as attacking illusions in our self-understanding which prevent us from being politically active or effective on behalf of the working class. One particularly pernicious illusion tells us that our employers provide us with work, that they are somehow doing us a favour by employing us, and that we should be grateful to them (politicians often talk of 'job creators'). Marx turns the picture upside down and the right way up, so that we can see clearly what is the case: it is not us who need the bourgeoisie, they need us. We could produce what the species need without people exploiting our labour for profit. The bourgeoisie could not profit without exploiting us.
If Marx by his writing has stopped one person being grateful to her boss, then his work was worthwhile.