If I send my kid to visit his dad, knowing full well his dad is going to abuse him, am I at fault for sending him anyway, or are you exclusively arguing that his dad would be at fault, and I would carry zero blame?

You are not guilty of child abuse. You are guilty of endangerment. The father is guilty for child abuse. That said, the responsibility a parent has a child far exceeds the responsibility in most other relationships. Also the analogy is quite distant.

Consider a closer analogy of report a number of child abusers to the police. One of these abusers is a father who abuses their child. Enough info is made public during the trial that the child is shamed for it (even though we can agree they should not be shamed for it). Are you guilty for shaming the child? Say another child is taken from their parents, both of whom had abused them but stopped and placed into foster care where they are abused again. Are you guilty for their continued abuse?

My analogy was designed to demonstrate the responsibility of an actor who has knowledge of a consequence of his/her behavior, whether or not the actor is in control of the consequence itself.

In the event of a shamed child, I am indeed responsible (not guilty, that has a legal connotation that's undesired here) for a child's shaming if I am the one who acted, and the result of which was the shaming, regardless of other outcomes. Had I not acted, the child would not have been shamed. Therefore I am the responsible actor in the child shaming (not exclusively, obviously).

You're apparently mixing both morality and legality, as well as what is happening vs. what ought to happen [0]. I am explicitly speaking in the realm of what is happening. You are responsible for the shaming of the child, the beating of the child, or the exposure of Joe Normal's loss of his job. Whether or not you were acting morally is an issue I'd like to address, but only once we've agreed on the premise that an actor is considered responsible for all direct consequences of his/her action.

[0] http://en.wikipedia.org/wiki/Is%E2%80%93ought_problem

Then given that we are responsible for the actions our governments take, and since all governments have taken actions that have caused children to be molested (such as putting a child in a foster care), even if those actions were reasonable given the known information at the time (removing the child from a parent who was giving them meth and putting them in a foster care home that was safe by all indications), we are all responsible for child molestation.

Am I missing anything here?