But the Earth (and race) exists, how we characterize it doesn't really matter. There are steps between me being Irish and my ultimate African ancestry, maybe 200-300 kya. I dont have a problem if 'race' is a word used to describe one or more of those steps. Some day we'll be able to trace our bloodlines all the way back to Africa, somewhere along that line we'll find larger groups from which our clans and tribes and ethnicities separated. I might not view Neanderthals as a race, they'd be more like a sub-species. But my ancestors who interbred with them a bit might be a race, one to which I belong.
I guess my problem is equating racism with acknowledging race. Somehow the belief that one is superior to an entire group of people based on race has become no different than believing people evolved into different groups and race is a way of acknowledging them. The latter has nothing to do with feeling superior. Yes, 'race' is poorly defined... I thought the reason for that is because race was meant to cover the step(s) separating tribe and ethnicity from all of humanity and there's more ambiguity involved.