I get it about '...re-examine our history in the light of day in 2020.' And then there's the hagiographic depictions in our history books and movies, the ones that some of us grew up reading and viewing, but of course the point is that it IS a different time and the statues have a different meaning, today.
I'm not a slippery slope person, I think there is a difference between slave owners who authored a document with wording at the very beginning that would confront America for generations about what 'all men' really meant. And then they authored a governing document with the power of amendment.
And I distinguish serving as president from taking up arms against your country. I think it's a persuasive distinction.
I agree on all your 3 points as you wisely point out.
Since 1964 we have paid lip service to discrimination and both parties are to blame since they don't want to address the problem but instead deal with the whataboutisms.
Obama to his credit tried to point it out and instead they mocked him for his beer summit.
Racism and bigotry is not something children are born with.
As my son once pointed out to me when he was very young he had two friends who were both named Jim. They were both his friends and the only thing he knew at his young age was one had brown skin and the the other white.
In his innocence that was the only way he could described his interactions with both who were his friends. That was the only thing that mattered to him. He considered them as equals.