A few of his books have... erm... let's say questionable groups in them, even on the protagonist side. But he's always played them straight I thought. And I usually enjoy his novels. The ending of the second emberverse trilogy just really struck me bad. Technology regression is something I REALLY hate, and any group that forces this on the earth (along with killing 90 percent of the population) just can in no way be good to me. And its irritating when they are portrayed as benevolent.