This equation expresses the problem. Western Civilization has been largely (but not wholly) replaced with bureaucracy and the mass media.
Bureaucracy because all institutions, organisations, corprations, professions of significant size and power have become primarily bureaucracies of a generic type - linked-with other bureacracies to make The System.
Now almost everybody depends on The System for their livelihood, to keep them alive - yet The System is an Evil Liar.
And culture has become assimilated to the Mass Media; Media values have displaced others. Wherever we look, from fiction to science, from medicine to fine arts; we see the same, inverted, value system emanating-from the Mass Media, policed and enforced by the mass media (i.e. 'convergence').
The System and the Media are in synergy; the Media embodies the morality that the System implements (albeit that the morality is one of opposition - a negative morality). The Media provides the evolving and fluctuating goals and motivations (feminism, antiracism, sexual revolution etc) which the System embodies.
Media and Bureaucracy are Good Cop; Bad Cop - frenemies working-together to pursue the aganda of Evil Lies.
The System always and intrinsically lags-behind the Media. So, the Media - using instant mobs (whether virtual or physical) - constantly harangues and 'attacks' the System for being reactionary. The System responds by constantly evolving-towards the 'ideals' expressed in the Media.
The real Western Civilization has been substantially colonised and displaced by the System and the Media. It exists mostly under the radar, among individuals in spoken and personal contact (since even clubs and hobbies have become largely assimilated and repurposed).
Western Civilzation cannot truly be defended in public discourse, in the public realm - exactly because it has been assimilated to The System.
Typically, an attempt at defence merely amounts to defending The System against The Media (and its instant mobs); when The System does not even want to be defended - since System legitimacy and purpose derive from the Media.
The System does not want to be defended against the Media; it merely wants to be helped (especially funded) towards meeting the latest, always-changing, never satisfied demands of the Media.
Thus the System grows in size and power.
Christians cannot publicly defend Western Civilization without supporting that which is anti-Christian (not wholly, but Root and Branch Antichristian).
Since we cannot defend WC, without (sooner or later) ceasing to be Christian; we should not even try to do it.
We should resist the temptation...