Correct me if I'm wrong, but these aren't segregation centers. There's a big difference between "let's segregate these people" and "let's re-educate these people." China seems to be well into the re-education process and while they may not have trains headed to death camps, I think it's more accurate to say that they are closer to those death camps than they are to Jim Crowe laws, having already surpassed cases like re-education boarding schools [1] which AFAIK are considered genocide by international law.

[1] https://en.wikipedia.org/wiki/American_Indian_boarding_schoo...