Add in Islam...you have terrorists...
One word-——ISLAM >>> wolves at large with Saudi controllers & $
I read a fascinating article a few years about Islamic radicals in France that provided a lot of insight into this. France is filled with Muslim immigrants from places like Algeria, but the original immigrants from several decades ago have never really been a problem over there. They were too busy working for a living, driving cabs, running newspaper stands, etc. to cause any trouble. The real problem they face is with the children of those immigrants, along with more recent immigrants -- who can all enjoy a high standard of living without working a single day in their lives.
Sound familiar? It's called an entire class of professional malcontents, and this country is filled with them. These two @ssholes from Russia who ended up living in Boston didn't have to work for a living and never had to pay for their own education, and yet somehow they washed up on our shores and ended up in better schools than I ever attended as a lifelong American and taxpayer since the age of 13.