I’m talking about slavery similar to what there was in the southern states of the United States before the Civil War where some people were other people’s property and worked on plantations and produced cotton because they were forced to by their owners–there was no voluntary choice on the part of the slaves.
The difference is that slaves (in my forming of the question) are forced to produce goods (think slaves in the southern U.S. or in Brazil). Governments taxing us is a form of coercion where we choose what we want to produce, and the government comfiscates a part of it.
If it is immoral/unethical for B to coerce A into producing the cotton, is it moral/ethical for C to purchase cotton from B if B coerced A into producing the cotton? (C knows that B coerced A into producing the cotton.)
(If you reject morals, ethics, etc. then you don’t need to worry about jumping in).