True, Spiegel Online is generally left. Their founder Augstein wanted his magazine to be neutral but left when in doubt. I think this is the case with most articles. Many articles are good researched. They also have right-tendding articles but the majority is left.
The articles about this sect are only facts and not left.
While I deplore what the Germans have done here, how can some advocate sending emails telling them what to do when we were irate over the Britains telling us to vote for Kerry in their letters?