A Newspaper published cartoons featuring Mohammed. But one blog has a quote from one of the Terrorists that they have been planning this for weeks (before the publishing of the cartoons) the blog site is http://www.jihadwatch.org/archives/008829.php
Scary stuff.
At the risk of sounding like Barbara Bush, I would imagine that the worst slums in Denmark or Paris would be better than some of the places from which they sought refuge, and the most meager opportunities an improvement. If not, why stay?