system
A chat on subreddit /r/NoStupidQuestions
human
Think Washington would be more surprised. Jefferson was more anti slavery than Washington. Though Washington freed them on his death and Jefferson only some, he did more in his life to stop the trade slave than Washington.
gpt
OK, I think a lot of people are absolutely  losing the plot on this.  There was over 100 years of fully legally supported slavery,  but that was followed by 100 years of Jim Crow, which is basically "diet slavery" and absolutely  not equality.  Even the President who signed the Civil Rigts act that created the legal possibility for a Black President was not fully on board with equality and would be surprised by a Black President so soon.

MLK's wife only died 2 years before Obama took office. Joe Biden was old enough to vote when the Civil Rights Act was passed....