I write on here, but...

My brother publishes private information about my mother on his Facebook timeline - with no privacy settings.
My mother would absolutely hate that - she would feel violated. 
I don't know how to get him to understand, or how to stop doing it. He feels that this is his life he is publishing, and she feels that her privacy as been violated.
He just doesn't get it, and he won't stop.
The only way I can figure to stop him is to not let him know anything.