If I was in favour of bombing every religious fundamentalist, I would be advocating that we nuke the Amish. Clearly, I'm not. Our response to the intrusions of fundamentalism into our lives must be proportionate to the nature and magnitude of that intrusion.
Choice quote from it:
"Unlimited tolerance must lead to the disappearance of tolerance. If we extend unlimited tolerance even to those who are intolerant, if we are not prepared to defend a tolerant society against the onslaught of the intolerant, then the tolerant will be destroyed, and tolerance with them."
It is not a perfect book by any stretch, but I think it covers certain topics particularly well.