You make not like the truth, but the fact is, until recently, we were a much more open society, allowing 2 million immigrants per year.  It was not until the EU was established that Europe had such open immigration.  The reason they opened it up, especially to Muslims, is that their populations are aging and their working/taxpaying base was shrinking, and their social programs were becoming unsustainable.  They figured the Muslim immigrants tend to be young and their birth rate is more than twice as high as the Europeans, so they'd contribute more to the system to make it sustainable.  What they didn't anticipate is that the Muslims reject their values, don't assimilate, and are creating an increasing crime problem in Europe and Scandinavia.  But they prefer knives, bombs, and trucks to guns, so the statistics get a bit distorted.  And they don't have the gang and drug problems we have among a couple of our ethnic groups, which are responsible for most of our non-suicide gun deaths.