I have a comment on the aspect time:
In your example you show something which in the past was considered unacceptable, but today is no longer deemed to be so.
The inverse has also been hapenning lately, with books from the nineteenth century refering to "niggers" being subject to bans, and even talk of just rewriting them to remove offending passages.
This to me is very harmful. When looking back towards the past, we shouldn't try to paint it more rosy tthan it was. We already have this tendency to overromanticise the good old times without covering up it's uglier bits.
Totally... And another type of censoring which I hate. "Airbrushing" out the bits of history that are not seen as compatible with our modern times. While I understand the offensiveness of such racial terms nowadays (as well as a slew of others), scissoring out the bits we don't like will only lead to historical inaccuracies.
It's good to be able to compare how things were and are now. How we've evolved and times have changed.
Great points, my friend. :)