It doesn't matter that they can't help it, are also trauma victims, and don't do it maliciously. We must see the danger and look past the mask becuase they ruin lives and destroy people. No one can help them. But I can try to warn and help those who have been victimized by one. Ut's not about blame. It's about understanding what NPD is and protecting ourselves and loved ones from them. I'm sure serial killers are similarly victims of something terrible and it's noot their fault either--they can't help it--its what they are. It doesn't mean we ignore it and hand them a knife.