I suggest that you contact Facebook and report this conduct as the postings that you describe sound like pretty clear terms of service violations. Also, go back to the court where the divorce decree was entered, and have an attorney file a motion for contempt, attaching copies of all of the Facebook postings. (Save them.)
This answer is offered for informational purposes only. It is not offered as, and does not constitute, legal advice. Laws vary widely from state to state. You should rely only on the advice given to you during a personal consultation by a local attorney who is thoroughly familiar with state laws and the area of practice in which your concern lies.
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