Where people come from, and not where they are now. History isn't a
fairy tale, it's ugly, not just the 1800s, but if you go back further than that, it was ugly before that.
Trying to erase history or tell people they can't educate people about it anymore over sensitivity to it, or because it traumatizes people is silliness, and will not change
the present.
You don't burn every copy of a book because it traumatizes you to read it, or you disagree with what's on the pages so that nobody else can read it either. You simply put the book down, read another one that doesn't offend you so much, and question everything you read, even if it's about the Civil War and slavery. What do you really have experience with concerning slavery? That was the 19th century, this is now 2021, nobody was alive back then to give a personal experience narrative of an event. It's a lot like an
Italian guy saying he is still mad about his relative from ancient Rome being killed as a gladiator even though he didn't even meet the guy and never walked in his shoes. These are a couple thousand year old shoes he would be trying on. You would think the Indians would be the most outraged group in America over anything you can think on social media, yet you don't hear much from them, there's hardly enough of them left to have the kind of voice
black people and every group that lives on their land (including
white people) has nowadays. Yet every other group thinks their story matters that much more than the next (that includes black people)
to the point that history can't even be talked about without somebody getting a sore ass over it.