https://datatracker.ietf.org/doc/charter-ietf-term/
The TERM working group is therefore chartered to produce an Informational RFC
containing recommendations on the use of inclusive terminology in the technical
work produced by IETF participants. The RFC will express general principles for
assessing when language is inclusive or exclusive.
Given that Martin Luther King Jr. acted, and people saying BLM are
seemingly acting, against *NOT* formally denied slavery but custom of
treating blacks as second class or secondary citizens where whites
are first class or primary citizens long after slavery was formally
denied in US, if some terminology must be banned in US today (*NOT*
necessarily in IETF), they are "first/second" or
"primary/secondary", which can safely be replaced by a lot
less offending terminology of "master/slave".
PS
Feel free to say that people with Asian gene, including native
Americans, especially Latin Americans, are treated as third class or
tirtially citizens or illegal immigrants of US having lesser
status than blacks.
Then, "third/tirtially" may also be banned, though I have no idea
how they can be rephrased.