I honestly never saw a problem with master / slave, nor with whitelist / blacklist. It's the same as killing children, forking children, etc, it's computer terminology and not everything means that bad thing that you personally want it to mean.
I'm not politically correct, I live in a real world. Calling a git repository different really isn't doing shit against slavery and it pisses me off that people are going to down vote me on their slavery built iPhone because apparently I like naughty words and you apparently like slavery.
You want to stop racism? Then stop meddling with computer terminology and go out there and actually do something real.