What must be recognized is that the West does no good to the world at large by committing suicide through an excess of generosity and sentiment. Where will the refugees of thirty years from now, any of them, even a small number, turn to if Europe has become part of a Caliphate? How much can the U.S. help others or act as a beacon of freedom if its already weakened economy and infrastructure are further strained by bringing in numbers of people with problems we do not have the resources to handle? And as we turn into more of a police state in response to the terrorist threats we have fecklessly welcomed in, how much do we remain an exemplar of freedom to the nations and a place of safety for others to come to? And, finally, face this: The government of Germany, or the U.S., or France, has more of a duty to protect its own citizens from terrorist attacks than it has to welcome the destitute and oppressed from other countries. That’s just a fact. There are concentric circles of duty, though it is politically incorrect to say so.
See also What’s Wrong with the World.
Update II: Anthony Sacramone presents some notes on that magical era when Christians, Jews and Muslims lived in harmony in medieval Spain.