I'd use the word humanity to describe that level of respect, to contrast it with something more or less universally regarded as the lack of humanity, things we might even consider crimes against humanity, where people are deprived of the respect towards their humanity, denying them food, inflicting pain, eradication of culture, systematic murder, etc.

Obviously there's a lot of gray room between the two where, for example, cruelty for the sake of cruelty, in most circumstances, could be considered a lack of respect that people deserve for solely existing. That's certainly not on the level of crimes against humanity, but I wouldn't say that's respectful, either.

Anyway, you still gota defend yourself like they are monsters. Tell your kids: they are masterful liers and manipulators, they look normal, they have a cover (they have jobs and all, they can go undetected for decades, their whole life even) and more importantly: pain is pleasure, even theirs, especially yours (not always physically but mentally as well). That last bit is the endgame but you and me dont have that so its very difficult to comprehend. They come in variations (think Joker and DoubleFace). Oh and one last thing: they are not rare (between 0.7% and 1% of the population afaik).