The Church has rightly denounced slavery through the ages. When the Christian abolitionists stood up to expose and attack slavery as an abominable sin, by the power of God, they abolished it, making generations of people see slavery as the abominable thing it is.
However, there is another form of slavery, a literal one, not some mere "metaphorical" one. It is the spiritual slavery of usury, which puts the masses into debt slavery, so that they are forced to repay a higher debt than was taken out.
Debt imposes an obligation on the borrower to repay. The Bible makes this very clear by stating that is it the wicked who borrow and do not repay (Psalm 37:21). All people know this in their hearts for the Moral Law of God is written on the heart of every person (Romans 2:15). This is exactly why people deep down inside are anxious about debt, or are seeking all kinds excuses not to repay debt; they know the wrongness of borrowing without repaying. It is absolutely clear that borrowing money without seeking to repay is morally wrong. One need not be a Christian to know this.
The whole world knows of the debt crisis, except for the sleeping Church, which ironically is as blind as a bat towards most spiritual issues that blind, enslave and dominate the whole world. As Christians, it is all to easy to simply blame this on the unsaved, dismissing the problems as simply "their fault", and therefore that the Church need not be concerned. In response, it must be asked how can a blind world which does not know what it is doing to act in the right way for it knows not righteousness? It is a world which is under the power of the devil who seeks to "steal, kill and destroy" (John 10:10). It is controlled by the devil and altogether unable to resist him.
The world is like the foolish man in Proverbs 7 who was seduced by the harlot who "With her much fair speech she caused him to yield, with the flattering of her lips she forced him" (Proverbs 7:21). As much as he chose to sin, knowing what is right and wrong, he was overcome by such an overwhelming temptation which dominates him completely, impossible to resist in the flesh. Likewise, the world chooses to sin by its unethical borrowing, and because it is dominated a desire for easy money, a lust for money. As such, it is dominated by the temptation of the modern banking and financial system to fall into the trap to borrowing money, even with usury attached to the loan.