I found it seriously disturbing that there were some parents who actually thought it was ok to involve their kids in child porn.
A few weeks ago, I took a primal therapy course, aimed at improving participants self-awareness and quality of life by letting them express pain experienced during childhood trauma. Anyway, the reason I am bringing this up is that some people in this course had childhood stories of abuse that would make anyone puke. And these were all high-income people with good jobs.
I believe all parents try their best, nobody wants to be a bad person. But if your perception of good parenting includes fucking your kids, that can make you do horrible things.
I do think it's important to recognize a spectrum here; and also, rational discussion requires avoiding emotive language.