Widely accepted terms “master” and “slave” as an oppressive metaphor for ownership/importance.

Lately there is an increasing movement in the software community that supports this idea. Moreover, we can verify that this change is done in many relevant projects in the different areas around the world:

https://github.com/github/renaming
https://sfconservancy.org/news/2020/jun/23/gitbranchname/
https://github.com/WebKit/WebKit/tree/main