The person mentioned in the post obviously didn't assume that after they started name calling but I think you could assume good faith usage of those words and still have a problem with it.

>... I think you could assume good faith usage of those words and still have a problem with it.

One should also understand that not all countries have the same political activists and race-baiters that the US has and therefore the words master and slave don't carry the same baggage as they do in the US.

Master/slave doesn't carry baggage because of political activists and race-baiters but because of the US' history of slavery/racism.