It goes back to the civil war and every step of the way when black people here were actively denied their rights that the civil war was supposed to have guaranteed them. I have lived in multiple countries across different continents. Even if race was not as big of a hot topic issue, eceryone could tell if a person of a different race is standing in front of them. So, to simply say racial blindness is the way to go is ridiculous. The fact that they were usually a very small minority and had no historically brutal ties to the founding of that country is probably the reason why it wasn't considered such a big issue.
Nevertheless, ultimately, one can't go through life blaming everything on racism. However, fighting for centuries to be free, to gain rights, only to be systemically rebuffed, ignored and even oppressed and brutalized along the way in different forms, that has to be recognized for what it is. Using a single event to disprove racism and even arguing that some historical things never happened at the very least is willful ignorance. Then, by the same token, reversing certain laws that were meant to safeguard and protect those rights that they finally did end up receiving. Ignoring what that time and history would do to any community to reinforce ones own stereotypical views, as political leaders use it as a way to stir up support from other disenfranchised communities.
In the end, the problems only get worse as the next generation kicks the can down the road. The issue could have been, perhaps, resolved a long time ago. At this point, things look even more complicated and the longer it goes on the more difficult it is to overcome or resolve.