Neutral ground is that injustice is wrong, no matter who it happens to. It's wrong when it happens to blacks, it's wrong when it happens to Asians, it's wrong when it happens to Hispanics, and it's wrong when it happens to whites. That's neutral.

From there, you look around and you see that blacks and Hispanics seem to have injustice happening to them in ways that don't often happen to whites. (Not sure about Asians; but my perception is that they may experience injustice, but less of it than blacks.) And then, coming from a position that all injustice matters, when you seen injustice happening more to specific groups, you say "That injustice matters." Not that it's the only injustice that matters, or that other injustice doesn't, but that specific injustice seems to happen a lot, and it's not OK. We need to do something about it.