Sorry to interrupt......just wanted to interject some facts.
and.....
So. First of all, western Europe is perhaps the single safest place on the planet if you want to avoid terrorism.
Second: The current rise in terror attacks has in fact been mostly from extremists who claim to be Islamic. But different from the much more frequent IRA and Neo-nazi etc... terror attacks of the past, these current ones are usually larger fatality numbers per attack and they have a lot more video footage (thanks to modern tech), both of which leads to splashier news and more.... well..... terror.
Third: the second point allows for much more exploitation of the attacks in the news, particularly feeding on the fearful and ill-informed....usually with short-sighted (and ineffectual) 'solutions' suggested to this same subset of the population. Similar to what we have seen in the US with "rampant voter fraud", the 'summer of the shark', or rapists and murdering drug dealers streaming across the Mexico border.
Fourth: Many of the attacks are from long term European citizens, who, years after immigrating, have been 'radicalized' to use violence. While the incoming refugees and other immigrants are almost to the man/woman/and child, just trying to escape much worse in other parts of the world, and come with no ill will toward their receiving country.
One more fact. No amount of terroism is acceptable, and it must be stopped. But worthless 'answers' like "throw them all out!", or forming gangs to go beat up refugees will result in any kind of increased 'safety'.
I'm not a socialogist or population psychologist, but I'm willing to bet that any worth a grain of salt could come up with more verifiably, numerically successful ways to decrease terrorist attacks.