there are some really bad apples in any profession. I have personally experienced coercion and mistreatment, bullying even by cps. The best way to get them to stop and go away is to get a lawyer and insist all communication goes through them. That was my personal experience. It is very difficult to protect yourself from a fishing expedition. I wouldn't risk my child based on trusting what would happen with my case in cps. I wouldn't trust my child's future to that.

Those are personal decisions and depend on the precise circumstances. If there are specific charges that is one thing, but if it is just a general suspicion because you have a mental illness that is another.