Your message--why we must end the malignant reign of racism--is vitally important. Sadly, it will never change the thinking of the ones who think the power structure favors them. Those people need scapegoats, and they can't bear the thought that they might be wrong. So the more you confront their irrationality and inhumanity, they more they cling to their identity as members of the "winning" team: the rich white men who make the world's decisions.
So you're preaching to the choir. And that's okay. I've been singing in that choir a long time now, and we need all the inspiration we can get. A message like the one you offer here is helpful in its practicality, because we all get worn down by the aggressive rhetoric from the defenders of the evil empire.
But remember that the best revenge on all who wish you harm is just to thrive. So thrive--and help us thrive as well--by writing what you want to write about: the miracles that bring you joy and wonder, the questions that you love to ponder, and the worlds you want to build in your imagination.