"White niceness is an act of violence."
I was with you, right up until this point. I think I understand what you are trying to say. But it comes from spite and anger and is only trying to invoke more anger and spite. More corrupting emotions have yet to be invented than these two.
My political hero and the man I feel to be the finest American who ever lived is Frederick Douglass. He did not succumb to rage and, indeed, held so strongly to the truth that he was willing to rebuke enemy and ally alike, as occasion called for. But he never made the descent past common decency. I think your piece is in this spirit but the call to rebuke niceness goes too far, and terming it violence is an absurdity.
Anti-racism is the public call for all people to be nice. Niceness is the goal, for everyone.
I'm also intrigued by another aspect of your writings--though, to be sure, it is not particular to your writings: The use of the word 'allyship.' Again, I think I know what you are trying to say, but I wonder why you and other writers don't make use of the word 'alliance?' Is this deliberate? Wherefore?