There is only so much i can do - i'm not american and thats a change i can't make on my own aside from doing my best to be an ally when possible.
However i can open a few PRs and use some of my time to make that change. It's a minor inconvenience to me and if it makes even one black person feel heard and supported then yea, i'm gonna do it.
The other way around surely doesn't work, and is just symbolic gestures without actual change.