It's important that we claim our own history and heritage, and not let it be deleted from the record ever again. That's one reason, of several, that queer people just don't exist in many straight people's concept of the world - they were never told we existed, and all the evidence that we did was carefully hidden from view. Ours was "the love that dare not speak its name," the "sin too horrible for Christians to mention."
But we are here, we've always been here - and it's way past time to change the way things are taught, don't you think?
And boy, history class sure would have been a lot more interesting if the textbook had had pictures like these, wouldn't it boys?

Paintings by British artist Henry Scott Tuke (1858-1929). Click to enlarge.