For all its flaws, Western civilization offers so much that is good—freedom of conscience, freedom of speech, freedom of religion, respect for the individual, due process, relative peace and prosperity, and so on. These goods arose from an understanding of biblical truth lived out imperfectly, but faithfully, over many generations. Those attacking the West are doing so, largely, with the tools provided by the civilization itself. The social justice narrative ignores this history entirely. We ought not to.
America is not and never was a Christian theocracy with a government reflecting Christian values, THAT is what is absurd.