On the Fact that 40% of the Violent Hate-Crimes In France Are Directed at Jewish People (this Despite the Fact that Jews Represent Just 1% of the Population) and the Overall Number of Such Crimes Has Risen by 20% - https://www.nytimes.com/2018/07/27/world/europe/france-new-anti-semitism.html

France no longer keeps track of the ethnicity of the perpetrators (probably out of political correctness) and so we're left to speculate. My suspicion (and, yes, I'm really going out on a limb here) is that it just might have to do with the massive increase in the Muslim population. Just a wild guess.