Capitalism is a system unfit for human beings. It is a system of war, poverty and environmental crisis. The basis of this system is class exploitation, whereby the mass of people have to live and work according to other people’s orders in the interest of profits. Billions of people groan under the weight of hierarchy, alienation and social breakdown. But why is this so? Karl Marx wrote a book called Capital, which despite its age, goes a long way to explaining why. Marx argued that both profit & rent actually came from value created by exploited workers. That by its very nature capitalism must put profits before people. It cannot be reformed, & that for human beings to be free, capitalism must be replaced by communism.