American muslims have generally assimilated into the society and job market. They self identify as being U.S. citizens and take full advantage of all the civil and legal protections and economic / educational opportunities offered them.
French muslims on the other hand, have never been fully allowed to assimilate into French society. They are routinely denied many job and income opportunities afforded the average citizen. Most of the French muslims are relegated to live in ghetto like enclaves which further isolates them. So that today, 2nd and even 3rd generation muslims do not self identify as being French citizens. And therein lies the root of the anger. ......
Well let me come at you by saying a terrorist is a terrorist is a terrorist with a myriad of "issues" that causes them to go mega jihad. These lunatics go ballistic on more Muslims in the ME than the number of terrorists who take Christians out in other parts of the world. Uncle Abdul doesn't get invited to a wedding in the Sudan and BAM! he blows up the wedding party.
Now that being said, I've tried to explain to many over the years I've been on boards that all these Euro do gooder nations with their "oh let's take them in because we are soooooo kind hearted and wonderful" actually end up segregating the Muslim population from the rest of their fellow countrymen. They have allowed, no created the ghettos and hence you have no go zones. Whether politicians want to believe it or not, the ghettos do become no go zones.
The muslim populations in many EU countries are denied citizenship so there is no feeling of belonging whatsoever.
Now these are blanket statements of course because also in these countries there are many well adjusted and assimilated muslims but one still has to point out the problem areas that no one seems to want to address.
It's so different over here. Up here in the Great White North, all along one stretch of Eglinton where I used to live in Toronto at one time, we had this mini UN with West Indians, Italians, Portuguese, Somalis Greeks, Indians, Pakistani, all Canadians though or becoming Canadians.
Man oh man we are talking good eating and great food all along Eglinton.

It was one of my favorite places to live. My video store was run by a great muslim Somali who wouldn't penalize me if I didn't return the tape on time.
We didn't ghettoize is that a word? anyone. All cultures maintained but under the unifying umbrella of being Canucks. Heck we even have a Punjabi Hockey Night in Canada.

And we brought the world our beloved Little Mosque on the Praire.
It's so different here than in Europe. And we have to keep it this way and make sure we assist in any way possible newcomers to assimilate to our unique culture while maintaining their own.
We have to really recognize the huge failures in Europe and not replicate them.