Many years ago I read a book by called, "A Call to Conversion", by Jim Wallis. You might have heard of Wallis before. I suppose you could describe him as a Christian social activist.
The book described his own ongoing conversion concerning care of the poor. He also shared his experiences of living with a few like-minded Christians, in community with the poor. It was a prophetic book and at times Wallis sounded like an Old Testament Amos.
Well Jim Wallis hasn't gone away, or changed his message. His latest endeavor is organizing something called Pentecost 2006: Building A Covenant for a New America. His plan is to put poverty on America's national agenda.