@richpuchalsky
I don't think it's a gradual thing. From this point, the Overton window had been so fully shifted in terms of accountability for power and equal human worth that the path to institutional fascism was all but locked, though movements like Occupy, BLM, Me too and others fought (I think successfully) for the popular ideological ground, while WIkileaks and other new media continued to expose abuses of power. The firewall around the new national myth (brilliantly exposed by the movie Team America) was impervious, by neo-neo alliance and institutional design.
Counterfactually, you could say well if the USSR had still been there, the US would have had to contend with their propaganda but there was now the internet, 24hr news and mobile comms; hypocrisy was exposed time and again, as with Iraq WMD, Wikileaks and many more.
In sum, the ideology of the empire changed; values became subordinate to strength and difference became a source of fear rather than curiosity; those who would oppose were cowed and in that moment the old civic nationalism of the US were gone and "soft power" (always an iron fist in a velvet glove) was unveiled to reveal the steel, both domestically and abroad.
A big enough carrot is also a stick, yo.
/2