I've been saying it for a while. Do not accept refugees. Closed borders are a good thing. Let the middle east sort themselves out.
Other than not introducing people who are already extremists into the general population, not antagonizing the already existing populace and disenfranchising youth would be a good place to start.
The only way forward is to step back. Remove schengen until the world is stable. Progress cannot be made as it stands.
I don't quite know what to say about the victims... It's such a terrible fate, I can't imagine the sheer terror they went through. My heart goes out to them and their families.
As much as the number immigrants flocking to Europe is unrealistic and unsustainable, the perpetrators are not Immigrants but militant ISIS members.
Also to the people who said that the shooters don't matter, I disagree, Isis needs to be stopped.
These shootings are linked to the Hebdo incident imo