Let's face it, White Supremacy has ruled the planet for the last 4,000 years so it's pervasive. I acknowledge its pervasiveness but I know that we are now at the time in the history of the world where it's on it's way out. I don't think it will be in my lifetime, but as Dr. King said, "I've seen the Mountaintop".
White supremacy is not a tangible thing or a people, or a set of peoples. It is an idea. It is an idea that has taken root in some whites in their arrogance and it has taken root in some minorities in their jealousy and need for a boogie man.
Our ancestors all started in Africa. From there they spread to all corners. My ancestors wondered into Europe. The weather was harsher and their skin became more pale so it could pick up the vitamin D from the sun. They didn't go to Europe with some plan to turn white and oppress all those who were not as white. Through a combination of many factors, societies grew there that advanced more rapidly in a technological sense. They didn't make these discoveries so that they could oppress those with more melanin in their skin. They did it to make their life better. It was probably a combination of harsher climate that required more effort to survive and the fragmenting of religions that allowed more freedom of thought and ideas.
Having gained a technological edge, the white Europeans set out to exploit their good fortune and effort. Being on the receiving end of that was not always wonderful, I will grant. Though when it comes to slavery, the Europeans learned from and were aided and abetted by the Africans of the time who had been trading in slaves for centuries. When Europe was weak, North African raiders would sail up into France and England and raid villages and take slaves. When the English and Portuguese slave traders went to Africa, they rarely raided villages. Other tribes did that and sold the captives they took to the slave traders who then brought them to the New World. It seems to me that there is a lot of blame to go around and on some level it is a cop out to just blame it all on racism and white supremacy.
I totally agree that the police are too trigger happy and that there are institutional and social barriers that blacks in this country face. Ditto women. Ditto gays. Ditto Hispanics. As some point, everyone and every group just has to say "screw it" and gets up and does their individual best to do as best as they can. Adding a California perspective, the Chinese came here in droves and were dumped on and exploited for decades. But as a group, they picked themselves up and now there are more of them in the top schools in California than those from a European background.
The world is not just black and white. Neither are the solutions, IMV.