The Paris police would not press charges? Good grief. That’s appalling.
Why would they?
The victim is not a muslim.
Good luck to this guy trying to get anything done about it. Also, is it wise to have something permanently attached to your head? If somebody REALLY wanted to get it loose they could, and the injury could be gruesome depending on how the widget is attached. I can also imagine a scenario where the widget could snag on something and entrap the head or worse (getting your permanently attached Geordi LaForge accessory caught on vehicle lift would really ruin your day). There should be some kind of safety disconnect.