The word
slaver works for both.
https://www.collinsdictionary.com/us/dictionary/english/slaver
Slaver:
1. A dealer in or an owner of slaves
Sorry if it hurts your feelings Soy.
I don't care that pervious mutants engaged in slavery any more than I care that they used to rape and pillage. It doesn't mean I have to venerate any of it.
Why is it dumb? Are you unable to judge people who committed atrocities yesterday? A decade ago? How far do we have to go back before you think judgement is off limits? And if judging people back then is dumb and unacceptable than how can you judge King George a tyrant and the Founders heroes? No. What's obvious is that you're fine judging King George but a real sensitive bitch when people judge your heroes. Too bad. Learn to cope.
Wrong you moron. Slaver works just fine as a noun. As does tyrant.