No one is denying that these things did happen, but the problem here is that your "solution" for systemic racism, is to apply systemic racism to other races in benefit of minorities, now if you want to argue "oh but we must do so because every bad thing that happened to these minorities!" then you aren't actually fighting to end systemic racism, what you actually want is to have that power for yourselves, you want to be able to discriminate and suffer no consequences for this, in other words, this is pretty much revenge for what happened back then.
Two wrongs don't make a right, if you support committing injustice just to compensate the victims of previous injustices, you're no different than the original criminal.
You people are hypocrites