I don't know if you are French or if you follow French politics, but you should understand that right now, no one can be trust in French politics. No one on the right, no one on the left, no one on the center.
And if no one emerges before 2012, even if laws like this one are passed, the day people will have to vote, they will vote for the less damageable person for the country with experiences in economy and immigration.
If the socialist party gives us a Royal choice, we will have little Napoleon again.
And do not forget that a lot of people don't care at all about this law. A lot of politicians too. Don't be fooled by the simile debates you saw at the Parliament. a lot of the left politicians against this law were in fact only against the government. They don't care and will not care about this effect of this law unless the people goes out in the street...
Good luck to persuade people of the danger of this law. The syndicates are not impressed: they will do nothing and in 2012, everything will be forgotten.