Communism

You're Cherokee? Nice to meet you my very, very distant cousin. My white ancestors came in two waves, in the first most died during witch trials. The second wave (the relevant one) was a few Indentured servants, all but one died of bring overworked. That's a distressing common patttern of indentured servitude, there was an end date but you were unlikely to survive your master trying to get the best out of his investment. To call I Indentured Servitude less than slavery is degrading to every one of those people. For a more modern analogy, if Indentured Servitude isn't a form of slave labor, then prison labor, which is even listed in the Constitution as a form of slave labor is not in fact slavery.