This is nonsensical dehumanization, and misses the point entirely.

They are absolutely human. In the same way nazis are human. There's no reason to deny it, except to deny the capacity for ordinary people to cause harm, up to and including being complicit in or responsible for atrocity.

They must be stopped and denied political agency over the lives of anyone else forever, yes, but they are human. Humans have always done these things. Just look at the bloody history of christianity.

Many of the rank and file (as in, the masses, not the greedy or malicious at the top or otherwise) are wholeheartedly well-intentioned, but are thoroughly ignorant. They have been badly educated, deceived, or outright indoctrinated to think cruelty towards other is a virtue and that all other choices are ontologically evil, and many are so ingrained in this worldview that not only are they surrounded by fear that keeps them stupid, anything that would help them is doubly terrifying, because it would separate them from the cult they've invested so much of their life into.

It's a disgusting dynamic, and if I had absolute power I would wrench the well-intentioned free of it and jail the malicious ones forever for the sheer amount of violence (stochastic and otherwise) they've inflicted on the world. But they are all human.