bMany folks around these parts are familiar with the incredibly reactionary movie Braveheart. Some might also be familiar with the serious shot in the arm that this gave the Scottish independence movement---some believe that it's responsible for providing the renewed momentum for the autonomy Scotland has managed to obtain since its release through devolution.
There's a similar opportunity in France right now. There is a great deal of dissatisfaction with the elite who seek to elect a new people among the general populace. Hell, the National Front might well become the largest party. The time is absolutely ripe for a French nationalist classic about Charles Martel and his great triumph at Tours. There are all sorts of legends surrounding this event that would make for a grand spectacle of a movie. Make Charles heroic and disgusted with the accomodation of the Moors advocated by many of the elite of the time. Show the mood of gathering despair as Islam moves from victory to victory, overruning Spain and parts of France. Make him unapologetically Christian. Perhaps even give him a sign from heaven, a meteor that a smith forges the metal from into a mighty sword. Show him demonstrating the courage that inspired a heavily outnumbered army of mostly infantry to resist and rout a superior force of cavalry. Don't forget an inspiring score---borrow from Wagner if you must, but there's no shortage of good martial music from France. Make sure that Allahu Akbar as a battle cry is met at least once with something like 'Christ is Risen'.
As usual, folks are encouraged to steal whatever ideas they find useful or profitable. I wouldn't even begrudge you claiming that it was solely your own idea if you made millions on a blockbuster. Movies have a terrible power to seize the mythic narrative. Birth of a Nation was probably the first film to achieve this (as regarded the Civil War & Reconstruction period), but there have been many other examples since then. My gut tells me that there is a hunger for a film like this, with a profoundly unironic embrace of nationalism and martial virtues against an elite that would elect a new people in the hope of maintaining their own status just a little longer.