I understand your point that, if all white people were inherently racist, there would be no violent protests against police brutality or looting by opportunists in their midst.
This, however, hinges on a couple problematic assumptions:
1) that anyone is seriously saying that racism is *inherent* in white people in the first place, and
2) that these are the only people who would be eradicated in this fictional world.
1) No one is saying that white people inherit racism and are incapable of anything else. Well, no one who holds any credibility. There are always a few crazies out there.
2) If all white people were inherently racist, there would be no black landowners, senators, or non-slaves. Either that or the civil war would have happened a few decades later and would have been a race war. The way you phrased this sounds like all white people being inherently racist would actually be better than the current situation.
Since you’re not a racist, that’s certainly not what you meant to convey. Perhaps instead of saying there would be no rioters or looters, say there would be no MLK, or blues. Keeping the “what would be missing” positive looks better on you. Or at least looks less overtly racist.