You're asking me to experience something I can't experience and have empathy for that experience. I do have empathy. That's all I can have. Using the fact that I can't experience something as a justification to be racist and sexist is disgusting, though. Just because a group of people are "in power" doesn't excuse racism or sexism. If I move to Japan am I allowed to be casually racist towards Japanese people since they are in power and the majority there?

Not to mention that I can't help my skin color, or gender. I didn't choose these things, nor do I have any individual say in the institutional racism that has persisted in the United States over the last few hundred years. I can keep being myself, and not being racist or sexist, and call out anybody who is being racist and sexist as being wrong, but that's it. Regardless, that doesn't excuse being racist/sexist toward white men. Over time demographics are going to change. Eventually, the United States will be more multi-ethnic than perhaps any country in history. When this happens, casual racism from times like these can lead to actual racism and bigotry later. You can't tolerate it anywhere, or it will grow like a virus and infect the minds of people for generations.