I'm not saying that this is your case, but I noticed some people seem to hope that the perps are ME terrorists. I for one hope it's the work of a nutcase instead of a new ME terrorists MO. I know the media would have a field day and it makes me sick just thinking of it. But the chaos that would follow if it turns out this is a new wave of terrorist attacks would be even worse than anything we can imagine at this point...
I have to admit, I absolutely love those first person shooters. Rainbow Six especially, mainly because of the religious orientation of the targets.
I can see your concern if this is ME terrorists. However, I also think you are underestimating the strength of the public, especially American. The media can run around squealing about fear and terror, but for the most part people don't let it get to them. They may change their habits, but life goes on.
I would much rather have it be a ME terrorist. If it is a white male gun enthusiast, then we all become a "public threat".
That scares me much more than Abu bin Towlie.