Confessions of a Tax Collector by Richard Yancey (HaperCollins, 2004) appears to be a very interesting look at the practical, personal, and moral implications of a job that requires a person to rob people for the goverment. Yancey was a field offer who seized people’s property before “he managed to pull himself back from the brink of moral, ethical, and spiritual bankruptcy.” Here is the book reviewed in the NYT and many reviews on Amazon.