With all that in mind, how we look at things change. As an example, when have you ever seen the word "sexist" used against Miss Scarlett? Despite the fact that such a term is clearly warranted, I never have seen that word against her until I used the term. Previously, I mentioned that she declared that she wished the war would go on longer in the hope that the South would win. She resented the fact that young men of draft age had not enlisted and were not fighting. When Atlanta was being abandoned as the Rebs were retreating, she got angry that they didn't stand up and fight to the death. When Miss Melly got sick during her pregnancy she goes hysterical, pushes everybody around, runs into the encampment used by sick/injured reb forces, and demands that Dr Meade drop what he's doing in order to help her sister in law. In her twisted sexist little mind, the life of one woman is of greater importance than those 100+ men who were dying and in great agony - all of whom had been sacrificing for her and her archaic, privileged old South lifestyle.* Somehow, she feels these men are of lower value than slaves as not only must they work for her good, they must DIE for her good as well. She is the worse sexist anywhere.
Only in the modern era would you see her described in such a fashion. And she well deserves such a designation. Thus, we learn from the past and our views evolve. That is one of the biggest reasons why we must not censor.
*thereafter she demands that Captain Butler bail her out of the situation by using a carriage to take her away - she hates his guts but does not hesitate to use him when convenient. She never stop using people, especially men in order to get her way.