Those who claim that anti-Semitism is on the rise in Europe should read this informative and fair Time Europe article (I've posted the link before):
The article largely supports the notion that the anti-Semitic attacks in France and elsewhere in Europe are carried out either by a.) groups of fanatical Muslims or b.) by far-right extremists that hate all immigrants equally and are just as likely to attack mosques as synagogues.
Emmanuel Weintraub, chairman of the French section of the World Jewish Congress says in the article that "anti-Semitism [in France] is a rather quiet and drowsy thing. It might awake one day, but it hasn't awakened now
." (my bolding)
Wolfgang Benz, director of the Center of Anti-Semitic Research at Berlin's Technical University is quoted as saying that "he recognizes the seriousness of these incidents, and agrees that a taboo against criticizing Israel has been breached," but that "he doesn't see a trend of growing anti-Semitism
in Germany." (my bolding)