My post dt. Dec 18, 2012 11:50 AM, provided some links to some useful articles in the New Yorker. I believe the New Yorker has provided by and large the most thoughtful coverage I've found. Here are links to some more worthwhile pieces in that magazine:
In particular, I'm interested to find out whether US citizens would be interested to get together effectively (with their government) to remove this taint on the USA. If not, I guess we would have to conclude that even this horror has not been enough to "be sickened by its own behavior and to change its attitudes".