That clarifies your stance Kristine, thanks. But in Britain though ethnic Europeans (white) are the majority, they do not "have power" over the minorities. I'm not as familiar with US law but I know there are similar protections. Thus while it is true that black people don't have political power over white people, it is not true to say that white people have power over black people. (BTW I don't like the terms back and white, no human being was ever either white of black.)
To reduce the complexity of human scieties to such a simplistic binary does not even begin to address the complexity of social dynamics in a diverse society.
I responded to an article yesterday which made the case that what is perceived as racism is often class prejudice. That is certainly the experience of my brown skinned 'special friend' who is well educated, expensively dressed in European style and speaks good English - with only a slight accent. So she appears to be a very well off British with typicaly British manners. She believes the very rare hostile reactions she gets are because she is educated and well off, and that is my experience too.