Brother Will says: Capitalists argue that verses like these should be purely voluntary and have no affect on human law. Like all capitalist arguments about the Bible, it ignores the obvious: if you close your heart against those in need, God's love does not live in you.
Or in other words, people who say that sort of thing should stop talking about what they don't understand. This verse is very, very simple: if you have things and others don't, share.
Or to be blunt for those who are hard of caring: This verse says that if you're rich when others are poor, you're godless.