For news about abuses from Children's Protective Services, there is no better source than the Legally Kidnapped blog. Every day it has new horror stories about terrible things that CPS is doing. Read the blog for a couple of weeks, and you will be convinced that CPS should be shut down.
I got a chuckle out of this video posted there. A girl sings "I Wanna Be a Social Worker, I wanna do what I can". In a couple of years, she will be happily stealing kids from families.