I guess that's debatable.

I would say that even humans who decided to become monsters (say, Unit 731, Mengele, Breivik, various serial killers, etc) deserve human rights and humane treatment in eyes of the law, because taking those away is a bad precedent for society.

The state should consider them people because the state has to consider everyone people, and making exceptions is very dangerous.

That doesn't mean we as individuals have to morally consider them as anything other than the monsters they are.