Local residents do feel that way. They have no money, no education, no job prospects, and don't feel they get respect. The fact that their cultural values are also at odds with the "haves" (in their view) further cements the view. But in a very real policy and economic sense, they literally were abandoned when industry left. Wall Street and Tech zoomed on while their factories and mines closed with no recourse to be able to recover from the economic vacuum.

>distrustful of central government

This hasn’t really been true for a while. Much of the quasi-libertarian stuff comes out of the conservative intellectual crowd, think tanks, lobbying groups etc. Some of it was also a holdover from the Reagan era, which was the last big right-wing populist movement, before Trump showed up.

It’s the anti-immigration, pro-manufacturing stuff that really comes out of rural areas. Stuff that creates jobs and cuts down on wage-dilution. If the Trump years were about anything, they were about the right collectively deciding they wanted an industrial policy and pro-labor (not pro-union, mind you) policy, instead of warmed over economic libertarianism.

Homicides and crime still occur, they're just not well-documented. There has to be someone collecting that data and then reporting it. That costs money, so many places just don't.

The absence of data != no activity.