They would not. But with millions of Islamists around they will have to flee sooner or later to the less "diverse and tolerant" countries.
I agree. No decent or sane people are going to persecute Jews, especially after what happened to them in WWII. Le Pen, from my vantage point, wanted to stop the eventual Islamic takeover of France. Jews and Christians would not have been threatened as they are today if he'd come to power.