It’s extremely hard to truly understand the past, how they thought, what they believed, what they saw as acceptable vs. what today seems crazy. For example the founding legend of Rome is called the Rape of the Sabines, which is how the brave men who founded Rome kidnapped all the women from another tribe so they could have wives and reproduce https://en.wikipedia.org/wiki/Rape_of_the_Sabine_women

Imagine if the USA’s founding legend wasn’t the honorable Founding Fathers, Declaration of Independence, and all that jazz, but instead how our ancestors kidnapped and raped the women of the neighboring tribe. The psychology of such a people to remember and retell this story is pretty incredible