What percent of Muslims living in France are "refugees"? Or in all of Europe?
The problem isn't too many "refugees", the problem is a complete lack of assimilation.
There's a lot of truth in your statement. There is nothing wrong with diversity among people in a free society as long as EVERYONE recognizes the SAME legal and political system set up by that country for everyone living within its borders to respect and follow. By France giving incentive to Muslim immigrants to not only resist all assimilation, but to also establish a separate country within their country by allowing certain "no go" areas where the practice of Sharia law is permitted and no police allowed is at the heart of the problem. I can't think of anything more insane. But political correctness tends to throw away all common sense and reason.
What difference does it make if someone drowns their five kids because Jesus told them to or if someone shoots up a newspaper. Both murderers are crazy and use religion for justification.
These jihadists weren't crazy. And if they are, there are about a million more just like them planning and training to do the exact same thing. There aren't a million moms out there planning to drown their kids.