Sethe kill her children.
I think when Schoolteacher comes to Baby Sugg’s house to take Sethe’s children for slavery, Sethe that doesn’t want her children to be taken away especially to make them a slaves. Run out of choices, she decides to kill her children instead. That action is what I call Dehumanization. Killing the innocent child is very worst because even Sethe does it for her children’s sake and believes that it’s right to let her children free instead of being slaves as well as what she has experienced before. In fact, her children have right to live on. This decision is too cruel for them. That’s why killing is also the dehumanization.