From the communist manifesto:
You are horrified at our intending to do away with private property. But in your existing society, private property is already done away with for nine-tenths of the population; its existence for the few is solely due to its non-existence in the hands of those nine-tenths. You reproach us, therefore, with intending to do away with a form of property, the necessary condition for whose existence is the non-existence of any property for the immense majority of society.
In one word, you reproach us with intending to do away with your property. Precisely so; that is just what we intend.
From the moment when labour can no longer be converted into capital, money, or rent, into a social power capable of being monopolised, i.e., from the moment when individual property can no longer be transformed into bourgeois property, into capital, from that moment, you say, individuality vanishes.
You must, therefore, confess that by “individual” you mean no other person than the bourgeois, than the middle-class owner of property. This person must, indeed, be swept out of the way, and made impossible.