My personal feeling is that it is a very foolish law that will cause a lot of trouble. People should be allowed to cover their faces in public, if that is their choice. Their should be some exceptions to the rule however. For instance, teachers in schools ought to have their faces visible, or those giving evidence in a court of law also.
But this law, if it is not to be considered discriminatory against muslims, should be applied across the board, and here we encounter problems.
Suppose someone has a great disfigurement on the face that they would like to keep hidden. Is that person to be arrested under this new rule?
And what about people who go to fancy dress parties?
Are the cells of France to be filled up with "Darth Vaders" ?
The whole law is very badly thought out, and it makes the government of France look ridiculous and petty.