Ok, from what I can tell, the original poster has not yet responded to any of the comments/questions since he/she posted, so it's a bit difficult to determine the original intent.
However, based on the title and content of the post, I'd have to say that indeed it is about "white supremacy". I think one possible reason that this terms causes so much pain and confusion is because we tend to mix it prejudice, bias, and other similar terms. The truth of the matter is that white supremacy is actually a synonym for RACISM. To understand this, we must go back to Bacon's Rebellion of 1676. For it was out of this event that the idea of race was codified into a system to separate people for the express purpose of "racial" dominance. The actual codification process was put into various laws in 1691 as mentioned by the OP. Prior to this event, the various races were more or less equal and lived according to whether they free men, women or servants (I am simplifying the groupings due to time constraints). It's a bit frustrating to see the extent to which history is being re-written currently because a big fallout from this re-write will emerge the idea that anyone can be a "racist". No, I am sorry to report and will not debate, the only people who can be racist are the creators of the system and those who defend and uphold it today.
So, what is racism/white supremacy?
It is a global system based on the ideology that people "classified" as white are superior to those people classified as non-white. The people classified as "white" have the collective social, economic and political power to effect and control the lives of the people classified as non-white. In other words, they have the ability to define and manipulate the REALITY of the people classified as non-white... THE HAVE POWER. As far as I can tell, and I could be wrong, those people classified as non-white do not have anywhere near this kind of POWER. Marching down the street screaming BLM is NOT power, that is just another example of your mind being f**ked to such an extent that you are wasting your time in the streets. Even the people in SA or any of these so-called African countries do not have FULL and complete social, political and economic power. Show me a non-white country that is truly sovereign? With regard to who gets classified as white, the original people classified as white are keen to expand the pool of "whiteness" to suit their agenda. So today, Mexicans are regularly classified as white whereas they were NOT ten years ago.
As far as the slave narrative, there is quite a bit of evidence coming out supporting that it was/is a false story created to support the agenda of the "white" supremacists. And NO, not all people classified as "white" are WHITE and or RACIST. However, every person living on the planet today that is classified as "white" has benefitted and is benefitting from the system.
This is very difficult stuff to discuss due to the lies that we have all lived with. However, if you want the TRUTH, you gotta be bold and brave. Those people we call English and Germans are principally responsible for creating and upholding the system of racism/white supremacy. Go back and study 1691 and the 19th century and you will find the evidence. They've tricked us into looking at skin tone as a key marker when in fact it is all a game of colors they created to f**k us. The so-called black people have been screwed the worst and are now being used to further f**k us and the other so-called whites are now wanting to blame the ignorant so-called blacks.
What a joke it is.