This is a common misconception. Go back and read the founding of this country and you will realize that slavery was less about "everyone does it" and more about "I can get away with it". At the time of the founding of the US, slavery was already looked down on by many 1st world countries as a disgusting thing they did in the colonies. Many of the pro-slavery sections of the constitution were added to get more than the 13 original colonies to join the union. At the time the abolitionist movement was pretty strong and influential. On top of all the documentation indicating that slavery was not just the way it was, taking a whip and stripping the flesh off a woman's back because she wasn't working hard enough would strike even the most decrepit soul as immoral.
Trying to excuse what happened to slaves and indigenous people in this country is unfortunate. At best it's an attempt to cover up a guilty conscience - at worse it's hiding the reality of the practice to keep the door open to returning to inhumane practices.
I was primarily referring to what is happening in Canada and villainization of our founding fathers due to their policies with indigenous folk here...
In their day and age what they were doing probably seemed like the right thing to them and many others including many indigenous people. I am talking about the formation of residential schools, at the time of their formation indigenous children were dying at an alarming rate due to the poverty they were living in, kids were starving and freezing to death and suffering abuses at the hands of their families. My mother spent time in one and her stories are vastly different than what I hear or read.....it's almost as if there is a monetary figure attached to being a victim.
I admit even for the time, the government went about this in the wrong way and it could have been so much better but Canada as a nation was struggling and there were (are) so many individual indigenous bands that it would have taken a colossal effort to bring this to the people rather than the people to it.
Our nation didn't send in the military to depose the bands from their lands, we made treaties and employed indigenous folk to assist in the exploration of our country as equals.
We roll around to today where these practices of a century plus ago are being judged by the standards of today. Basically the founding fathers are being cancelled with their statues being vandalized and smashed to their names being removed from buildings and streets.
Not long ago our current government pardoned quite a few of the tribal chiefs who lead their people against the settlers murdering countless numbers of them....yet these chiefs names are held on high and we have streets in our capital renamed in their honor....
And the Canadian taxpayer has been paying reparations for generations-so much so we have made the indigenous people completely dependent on public support and like all people in this situation, they have zero respect for the people supporting them and over the years have gained a sense of entitlement....I have many stories that show this but I don't want to make this post too long.
As for the US and the civil war, that was a very unfortunate period for the US....the people who fought for the confederacy should not be revered nor should they be idolized for all time via statues and having their name used. Such a sad annul in the history of the US, and the scary part is the primary reason behind the war.
I know if it were me, I'd be very hesitant to name anything after a person in this day and age unless that person was thoroughly background checked to make certain there were no skeletons in their closet that could come back to haunt us in the future.