I’m not going to argue with you that at this point in time there are Muslim fundamentalist countries that are committing horrible acts. We differ on how to respond to that.
You aim more for cultural isolation. I get it. There is an inherent risk to true diversity, but there is also a potential for a better reward.
Cultural isolation is a short term answer, has been done before, and generally has led to some fucked up shit. The more groups are isolated, the easier it is to breed hate, resentment, fear of the other. That results in a dangerous fundamentalism. It is only by the groups being seen together that we can ever hope to defeat the cycle of division.
And a big way to show that mutual respect to invite people from those countries who no longer feel safe there, especially those who put their lives at risk to support fighting against oppressive governments. That’s how we move closer to peace and prosperity for all.