[T]here are those who view charity as a blessed state, and consider contributions a moral obligation. Such people would make charity compulsory, if they could. If, however, an act is made compulsory, it is not charity, for charity is defined as voluntary giving. If an individual is forced to give, he is not a contributor to charity, he is the victim of a robbery.
~ Walter Block, Defending the Undefendable, p. 124