I'm going to ask my family and friends to delete my ex off facebook
Are you thinking of having something to do with facebook?
I can't post pictures of my child and risk my ex seeing.
Your friends and family are your ex's people too. You can't tell them they have to hate your ex because you do.
They will come around in time.
You'd be seen controlling if you did so. It's going to leave negative impression on your friends and family. So you should leave them alone and let them make decision for themselves.