Things going to shit, in the US, correlates strongly with Reagen Era economic policies. The term "trickle down economics" says a lot about why it didn't benefit most people.
In my option, all presidents from both major political parties since Reagan have done more to make it worse, than better.
My conclusion is that what's really going on is class warfare by the ultra rich against the rest of us...
International stock index funds are, in my option, the best place to make that bet. It's been a losing bet (compared to other index funds) for decades, but you might notice that lots of folks still buy a solid amount as a hedge, anyway, because they agree with you, or at least aren't willing to bet their entire retirement that you're wrong.