The US might be much closer to an authoritarian lurch than 20 or 30 years ago, but don't romanticize the recent past. My understanding is that polls around the time of the Kent State massacre... Where unarmed students were shot in the back by the military for the crime if protesting the Vietnam war... had almost 50% of the population supporting the military and saying the kids had it coming. Nixon had tons of support right until he resigned. There was never any level of social cohesion, the divisions just hadn't metastasized yet