Unfortunately, the history taught here (at least where I grew up, but I believe it is like this in most parts of the country) is so US-centric and pre-WWII topical that we didn't learn anything else. I don't think I learned about the Japanese internment camps until law school and I was in "advanced classes" throughout my pre-university years.
Of course people would educate themselves outside of class, but there's a variety of reasons that doesn't really happen. It's quite sad and unfortunate we don't learn about the other atrocities (even those directly caused by the US). I wish it were different.
Slightly off-topic, but we're not even taught the realities of our own history that we're supposedly taught about. Example: the civil war. If you ask many people in certain southern states (and surely some more northern ones too), the reasons they give for the war do not match reality. Or at least they do not come close to telling the whole story. The stranglehold on our education system is bonkers
No, not entirely.
We have taxes taken out every paycheck that is kind of like an estimate of what you actually owe. At the end of the year, you file complicated paperwork to determine what you actually owe. Big tax companies lobby hard to keep it this way.
For anything more complicated than a very basic life, people often use a tax company (like TurboTax or HR block) for help, which costs money. For even more complicated ones, people may use an accountant.
It's a ridiculous system and the lobbyists keep it like that