I did not imply that our answers to questions regarding race and slavery have worsened over time.

My argument is that we should not conceal history because our responses have generally improved over the course of history (and will continue to improve in the future). History serves as a reminder that we must remain humble and open to further progress.

I agree with you in the changing of art, I would not change them but rather label or restrict to adults, so they serve us as what they are: pieces of history to learn from.