It isn't about upsetting anybody. It is about why should we interpret or be put into a position to interpret Islamic Law. I could care less how they practice Islam as long as part of it does not involve killing Americans.

I am sure the beheadings are not a accepted practice among mainstream Islam, so what is the point in talking to the some of the Muslims about how they are going against Islam when they do this. If they do not know this already, I doubt that our western perspective of it will have any influence at all. It would be a waste of time and probably do more harm than good.