The bad guys only have to get it 'right' once. The good guys, every time.
I think the score today in Belgium is 3-0 bad guys. If I can piece this together correctly, the subway bomb went off a WHOLE HOUR after the one at the airport.
I know it is people in shock and the following comment is not at all about them but makes the point, but in one of the videos of that attack at the airport had someone shouting after the blast "it's all right, it's all right". We still handle these things like that, while we are in shock we have no thought that there might be more than just one idiot.
They are way behind now in Paris and Belgium because they have whole communities in place where many won't turn in the bad guys. Pretty obvious who they think the bad guys really are.
Our values would say they are therefore with the bad guys. That is a real problem. Now we have 34 dead or more, no telling how many injured, and this could have been prevented with even modest community involvement.
How do you bring a community or a religion to account? Maybe they ought to run buses and let them go clean up the scene at the airport or something. Volunteer of course, but something to connect them to the consequences. Of course that isn't going to solve the problem, but some kind of engagement has to begin.