dehumanize
verb [ T ] (UK usually dehumanise) uk/ˌdiːˈhjuː.mə.naɪz/ us/ˌdiːˈhjuː.mə.naɪz/
使无人性，剥夺…的人性
to remove from a person the special human qualities of independent thought, feeling for other people, etc.
It's a totalitarian regime that reduces and dehumanizes its population. 那是一个压制民众、剥夺人性的极权主义政府。
Opposite: humanize