Numerous flights (mine included) are cancelled in Paris due to an ATC union strike. One grievance that the few media links I clicked (ABC, Reuters) fail to mention is the apparent installation of surveillance cameras to monitor French air traffic controllers.
The one place I managed to find this mentioned before my flight boards is on the ICNA website, in a press release for the strike. The grievances are not clear and seem more aimed at ATCs than the general public.