Marxists know this full-well. This is why they indoctrinated kids in colleges and universities to disbelieve in objective morality (and, for that matter, objective reality).
Marxists understood that the best way to get rid of the U.S. Constitution and government is not to make a military assault but to destroy the morality and religion of its people.
And the Marxists are within inches of declaring "Mission Accomplished."
Yes, and my poor attempt at explaining The Big Picture: who is really running the show in the culture war, and its nature and trajectory