Earlier quoted context omitted.
I think focusing on Nixon on at this point is actively problematic. Literally every administration since then has been complicit in this, and made it worse.
Sure, future administrations are complicit, but people didn't really "believe" the way Nixon believed until he brought the full power of the Federal government and an extensive political organization to spread fear in the general populace. Up until that point, enough people didn't believe in his course of action that his own people wouldn't give him the answers he wanted.
I just mean the responsibility for the state of things today, and for improving it, lies solidly on other shoulders today. And that is where the focus should be. There should be no support for a narrative of "oh, but those were the bad old days, things are better now". They are not.