<<I think the appropriate question is: does any religion [rein in their more radical brethren?]>>
I'm going to have to take issue with you there, JS. I think you took the crypto-fascist bait and got trapped as a result. The fact is that the Islamic radicals are less reined in than the Christian or Jewish radicals, at least in the sense that the Christian and Jewish radicals seem to be content to allow their state champions to conduct the bulk of the mass murder and torture inflicted on the world's Muslims, whereas the Muslim radicals - - given the subservience of their own official governments to American and Israeli interests - - have to do the job themselves without state assistance.
The issue can't be limited to the "violence" of the "radical" Muslims. The violence is not without its causes, and once again, Fascist Amerikka has hijacked the debate, focusing on the violence as if it sprang inexplicably into the world without examining the causes. Also, I might add, focusing on the "violence" of the Muslims without even mentioning the violence of the West against the Muslims, which is a thousandfold worse in almost every way, certainly in the final body counts and the number of woman and child victims.
This debate has to get back to first causes. WHY are the Muslim radicals willing to sacrifice their lives to strike back at Amerikkka? Who is controlling the Amerikkkan government at the present time - - and the terms of the public debate, such as it is - - and whose interests are actually being served? How do the media affect the situation, what role did the on-going media consolidation over the past 20 years play in this struggle? IMHO, the answers to most of these questions are not rocket science. The key to all of it is how the obvious is almost never debated in the MSM and how the terms of the public debate are set in concrete within very strict parameters. This is not freedom or democracy. And if you think this is alarming, wait till you see what's coming in the next twenty to forty years.