Yes, a religious worshiper must function within the law.
When a religious act exceeds the law, then we have our laws to protect us. There is no need to ban any specific religion in this country. Only specific behavior needs to be banned.
I think what we have here is come bigotry wrapped in "christian virtue" and "patriotism"
I bet allot of similar arguments were made about the blacks in years gone by.
I think it's just a good excuse for the raving semites, faux christians and anti-arabs/anti-blacks to pile on.
These people have no facts on their side, just paranoid ravings about what "Dem nasty Muslims" will do to us in our sleep.
Certain viewpoints are currently bad for your career. As an experiment, try telling people at work that you've just been elected Grand Dragon of your local Klan chapter and see how fast Human Resources develops a deep interest in you culminating in your being escorted off the grounds. A similar thing will happen if you let it be known that you're in "Christian Identity" movement (but since it's technically a religion, they would have to be more careful)
What's needed is for "Fundamentalist Islam" to be at least as unacceptable in American public and private life. It will be a PR struggle more than a political struggle