Ha, what's "the Japanese playbook"?
First off, antisemitism is nothing new in France.
Second, Arab/Muslim/African immigrants (now most in their second generation) have found themselves unable to assimilate in the stultifying and hide-bound French social system. They live in the kind of housing projects that have already been torn down in the US because of their toxic concentration of all the poorest people (of one particular color) with the most problems and least opportunities. Think Cabrini-Green, only worse. At the same time, the French themselves are very pro-Palestinian, pro-Arab, and anti-Zionist in their foreign policy, yet very stern in sticking to their secular precepts (head-scarf ban in schools). It's very complicated. [None of this is intended in any way to excuse horrifying and vicious behavior.. but just to indicate that the situation is more complex than it would seem at first glance.]
In my driving class in Italy, there's a middle-aged North African guy who gets a lot of dirty looks from the kids in the class. He is definitely "other", whereas in the US no one would look at him twice (which is as it should be). I am perfectly comfortable with him being there; the others are not, and you can tell he's aware of this with every fibre of his being.
It's common to see Nazi symbols spray-painted here and there. Soccer fans are regularly cited for the banners they bring to the stadium. This is not solely an Arab or Muslim immigrant issue, even if in the very tragic recent case you cite, the aggressors were from the immigrant community. My opinion is that nowhere in Europe have they actually come to grips with the past, much less the present.
Kids of my generation were brought up being told that if they weren't good, "the Turks" or "the black man" would get them. For all their 'socialism' and talk of 'diversity', it is very rare to see anyone of a non-European background in any position of power. I can't think of a single European politician "of color". Except for the BBC, I've never seen any TV personalities or news anchors or even reporters that aren't Caucasian. Ditto for doctors, lawyers, etc.
This is an informative article:
Europe's Minority Politicians in Short Supply
The starkest case is France, a country of about 60 million people with about 6 million North African Muslims and an estimated 2.5 million blacks from south of the Sahara desert -- an estimate, because France officially does not keep statistics by race. France prides itself as a country of egalite, or equality, where discrimination, officially at least, does not exist. But of 555 deputies representing districts in continental France, none is black or Muslim. (Minorities do hold some of the 22 seats representing France's overseas territories.)
I like that last bit.. the overseas territories are represented by "some" minorities, implying the rest of those representatives are Caucasian...!
I think it's great that America has been able to assimilate so many immigrants, and that it continues to do so! Ask the new guy who recently joined the board (Vietnamese, I think). In Europe he would have incredible difficulty being an engineer.. his chances in Italy I would rate as near-zero.. he'd be busing tables or maybe at most running a restaurant or heading a work crew of illegals from Vietnam. European society is highly patriarchal, highly parochial, highly inflexible, and basically still stuck in the medieval guild way of operating. Outsiders of any kind, even in the best of circumstances, present a "problem" that Europe is just not equipped to deal with on numerous levels.