Authoritarian 'harmony' doesn't imply any sort of longevity.
All of these problems occur because the US values individual freedoms over central authority. You will note:
Freedom doesn't imply any sort of longevity Either.
The problem with the west is that freedom is viewed as a sort of moral truth.
People assume that an authoritarian society is bad and that a society with freedom is good.
The truth is far more complex. What I say is an aspect of the truth, as is what you say.
What truly should absolutely never be conflated is the idea that one of these truths overrides the other.
A lot of the modern emphasis on explaining away people's behaviour as an inevitable outcome of their poverty/race/culture/history (depending on who you ask) is a leading cause of a lot of the problems we see imho.
One of the core beliefs our society is based on is that God gave us free will so we can make choices. While some degree of corrective was maybe necessary as current and historical wrongs do impact us today, it has gone too far imo. Someone at some point of time has to break a cycle by making a choice to be a better person.