In last night's debate Kerry said this.
"But I know this, that President Kennedy in his inaugural address told all of us that here on Earth, God's work must truly be our own. And that's what we have to, I think that's the test of public service."
This is the first time that I have heard an pro-democratic anti-capitalist use God instructions to Christians to justify large social programs. Kerry again used his "faith" to justify doing God's work
God has personally charged YOU with caring for the poor, not some government entity. If the government wants to care for the poor, you are obligated to pay the taxes they demand (Matthew 22:21, Romans 13:7), but that does NOT remove your original responsibility. I believe the pro-democratic anti-capitalists use their beliefs that the government "should" take care of the poor, to remove the guilt they feel for not caring for the poor.
Of course this begs the question, "Should the government take care of the poor?" That is something you have to decide for yourself.