I wish I could thumbs down this article. I feel so bad for your youngest. In this entire article, you haven't said once what you've done to prevent it. It is YOUR responsibility to make the bullying stop for your child from his sibling. Sorry, but you sound like a noodle. Limp and passive. If you are doing things to stop the bullying, then you need to say so, but right now, you are sounding super passive and passing the buck onto your own child to be their own protection. SMH.