Yes, there are moderate Muslims. At least one accepts the theoretical possibility. But documentaries like this one which aired on British television cause one to wonder about the robustness of their numbers.
These really are disturbing videos. The sound in the first one may be out of synch, but, if so, stick with it and you'll get the gist of what's happening. This documentary is the sort of thing for which the term "must-see tv" was invented.RLC