First thing's first, I'd like to offer my condolences to any of the families of any of the victims, and to all of France, and extend my hope (although I doubt it) that other attacks like this don't happen.
Second, while I agree that Islamist terrorism is a massive problem, I'm not sure if on a personal level I can agree with or support the exclusion of members of the Muslim faith. Admittedly, I am saying that from Australia, where we have a wide gulf of water between us and the nearest nations, and we can scan visas on a case-to-case basis without much issue. Similarly, acts of terrorism haven't been as prominent in Australia as in nations in Europe. If I was in France, I'd probably have a different opinion.
I personally don't think that the majority of Muslims are violent, or bad people. But I also don't think that it can be argued that young Muslims are the people most likely to become radicalized towards the ideology of the Islamic State.
I can't pretend I have any answers, because I don't. It's just the idea that hating people just because they are Muslim or could be terrorists feels wrong to me. The measure of a man isn't what you think he'll do; it's what he actually does.