It is just as valid for us to say Islam must be destroyed because it demands total subjucation to brutality and tolerates no dissent.
Sadly the West has thrown away much of its moral superiority along with 60 or 70 million aborted fetuses.Fetuses that would have been citizens of the U.S. of A.,Canada,the U.K.,France,and all the other modern nations. Citizens whose numbers,genius,dedication,and work could have made the world better,and certainly would have balanced the numbers somewhat. The people of the West have been committing national suicide by means of widespread abortions,limited euthanasiia, and tolerance of those who hate us for a half-century. A nation more certain of its foundations could easier fight external threats;now we are too much like a fractured family of drug addicts reacting to a home invasion.
The gov't of the U.K.,Australia,and just about every one but the U.S. of A. punish citizens who want or do defend themselves from criminals, crying that "the authorities will handle it".It is difficult for people to trust in a gov't which won't trust in the people.
I believe it has been proven a free people will fight harder,and the West needs to shore up its foundations of personal freedom and personal responsibilty in order to more effectively resist final enslavement.
Mecca et Medina delenda est.