A primary driver of practical Progressive political action is the maintenance of that presumption of moral and intellectual superiority built on the theoretical / ideological foundation. That is, Progressives have a burning compulsion to impose their presumed superiority on the world. And, the only means of accomplishing this end is the acquisition of power: both political and social.
Progressives seek and then wield that power with a brutality that intimidates the opposition. This in turn creates an environment in which their expansion of power appears to be inexorable. However there are many millions of citizens who, though cowed, burn with anger at those who demand their submission by brute political and social force. These people may appear to be defeated or even in support of the Progressive project. But they are actually looking for a vehicle through which they can express their internal sense of rejection.
Our contemporary situation is the practical flowering of this conflict. There is no way to predict which side will prevail. However the result will likely determine if this nation remains a Constitutional Republic or is transformed into a nation of Masters and Serfs.