Kill the kid.
I fail to see how kids are somehow more special than grown-ups. If you answer "innocence" then you probably don't know shit about children. There have been child murderers since the dawn of man.
http://www.crimelibrary.com/serial_k...2/index_1.html
If anything they are less important to society, because they don't know anything. I'll admit that a director needs to be careful not to terrorize a child actor on the set, but as a character in a film - anything goes.
Anything less is self-censorship.