I think there's definitely some of that to it, similar to /r/askhistorians "twenty year" rule. older events/topics can still be very controversial though. I wen

I think there's definitely some of that to it, similar to /r/askhistorians "twenty year" rule. older events/topics can still be very controversial though. I went to high school very close to the mason-dixon line. there were a lot of parents who believed the civil war was primarily about states' rights, and some were very upset at the school's coverage of the civil war and european colonialism/imperialism. I get that schools (especially private schools) ultimately need to satisfy the parents, but it strikes me as a massive disservice that my peers and I were able to graduate high school without learning a single thing to contextualize the two defining current events of our childhood: 9/11 and the iraq war. the film charlie wilson's war was the best explanation I got until I was in college.