As someone from the Midwestern US born in the late 80s, I can try to offer my perspective, looking back. I can elaborate on much of this, but I’m trying to be somewhat brief.

A) I came from a reasonably comfortable background, so there was no pressing need to be more political than voting for “the good one” every so often. So you don’t need to look into anything really, because your country is seemingly OK and that other stuff doesn’t really affect you in a tangible way. We simply don’t care, except maybe in like an Instagram “raising awareness” sort of way, at best.

B) People from the US have an incredibly warped sense of history, if they have one at all. This encompasses all time frames, from forgetting lies or “inconsistencies” you were told relatively recently, to straight up not knowing world history except for some “western tradition” stuff that the US incorporated into its self image (Greek democracy, enlightenment, etc). We simply don’t know, and don’t care enough to find out.

C) Conservatives have a monopoly on questioning mainstream news. It’s part of the culture wars that republicans are the crazy ones who don’t believe what the experts are saying. Our politics only admit two sides, and if you question respectable journalists (or whatever democrats say) you’re not a good liberal and must be fooled by Republican propaganda.