The French Govt need to man up, the whole point of terrorism is to force your will upon an unwitting number of folks, by acting against your own people in this manner you signal that the terrorists have won the day and forced you to do things that are normally morally repugnant.
Freedoms that have been fought for over centuries should never be traded in for a false offer of security, pretending to folks that you can stop every nut-bob if they surrender their rights and freedoms is just plain stupidity, some backbone is required here.