You mean if they used "concentration camp"? then I'd laugh off my ass just like I did now because of how ridiculous it sounds

I guess other people could be pissed off, but I think "concentration camp" is nowhere even close to "master"

maybe "camp"/"bootcamp" is close to "master", but then I don't think people would be annoyed over it.

"We're sending people to a week long bootcamp", just pretty normal and neutral statement.

equivalent of "concentration camp" would be "we'd want you to work as our slave" in job description sent to black person.