A significant segments of the population in US no longer believe that the government has their best interest at heart, and that's a measure of how far the collapse of US empire has progressed. The underlying cause for this mistrust is the decline of material conditions over the past several decades. This trend accelerated in particular with the fall of USSR as detailed in this excellent essay by Michael Parenti. However, most people in US lack the political or economic education to understand what's happening leading to public lashing out in random and irrational ways. People understand that they're being hurt, but they don't understand who is responsible or why it's happening.
Loss of public trust in the government means that US is now locked into an irreversible decline. The mainstream is split across political lines, with [democrats and republicans simply blaming the other tribe](https://www.businessinsider.com/majority-of-trump-voters-believe-its-time-