I still hate statements like that
"white people have so much power over us".
Because for the most part, there is no such thing as "white people" or "us".
Powerful people have power. I am not sure if even political power means anything more than economic power. For an average person the people who have power over him/her are not some group of voters or politicians, but really their employers, their supervisors.
Does a mayor have power? A governor? A senator? I suppose, but many of the places where I have lived, I could not tell you who the mayor was or even remember the Governor. As a white person, I have had very little power over anybody.
I guess that there can be an "us" when all, or most, of "us" agree on something. Like most black people agree about voting Democrat in an election. But not all. Some people I talked to in door to door campaigns said they were not voting. Another did not want to take a yard sign at his very strategically located house. So agreement is hardly universal.
I doubt if it bothered us white guys to be part of a black crowd on caucus day in 2008. That's the question - are we gonna be divided, with white people on one side and black people on another? If so, why? Why the divide? I can understand that in 2008, when black people were united in wanting to elect a black President. I can also understand one of my black friends (actually my only one, and I barely know her. I sent her a friend request because she worked for the state democratic party, and now she has a different job and we have never even met.) She is a Hillary supporter. I think a part of that support though, comes from her gender, not so much because of her race.
The point missing in this essay is that if black people are asserting their power by helping to nominate Hillary against white people. That to a very large degree, they are asserting their power and using it to help maintain the power of the oligarchy. As in - What's the matter with Kansas?