BSL, I know this system very well. I used to work for Pierce County Alliance up in Tacoma, WA, as a case worker, while in college. I was still fairly lefty/granola at that time, and it was still a little bit before my sudden conversion to the pro-gun camp by means of mountain lion and bear encounters, or when I read Atlas Shrugged for the first time.
PCA is a non-profit non-governmental agency that takes the worst kids from CPS. The ones daddy touched inappropriately and brainwashed into thinking that was just normal, the ones that got beaten nearly to death, the ones that were left starving and got down to 40 pounds and were 10 years old, things like that.
I had foster parents I was compelled to work with due to insufficient other options.
I had some I found were abusing one of my charges. They were put in jail for a few years and are now felons and cannot foster anymore.
I had some that couldn't manage their finances worth a damn and did the foster thing purely for the extra $500/month it generated for them. And treated the kids (because two were worth $1000, and three were $1500, dontchyaknow) like cattle rather than children.
And I had families that were truly wonderful.
I'm glad I never worked for the State and had to do the actual child seizures or court representation to defend the seizure, and I got to focus more on the rehabilitation instead.
But even so, I could only work there for a little under 2 years before it put a hole in my respect for humanity.
However, anyone that does a harm to a child in this world after accepting responsibility for his or her well-being, ought to be held culpable. Including agents of the State. Abusive foster parents, blind ninny case workers who don't perceive ongoing abuse, managers who oversee multiple clueless case workers who fail to intervene in abusive environments... all of them. I don't believe in any free passes for any of them.