Rather than fight and complain piecemeal in response to government oversteps in their attempts to stop terror, dissenters need to formulate a concrete affirmative plan for dealing with terror while maintaining civil liberties and privacy. I'm not sure exactly what this plan would look like, but without something organized to push for, the government is going to keep getting their way and making everyone less free.
It's not pretty to watch.
[edit] Fear is irrational by definition, I'm not judging on that, and understand why people are afraid.
Really? I find this conclusion a little baffling, to be frank. Without saying which side of the political spectrum is more "correct", one can hardly deny that the right includes stronger reactions to perceived threats, practically by definition.
You can see it in the rhetoric, the policies, the constituents, etc of both parties. Even now, I would be surprised if policies like these were seeing equal amounts of dissent from the right and from the left (note that this is a different axis than liberal/conservative).
A good deal of French people love the nanny state and their government to meddle into their private business and run their lives but they have their differences on how to achieve that and which flavor to pick.