As referenced from "Facebook Under Oath: You Have No Expectation of Privacy",
https://www.nytimes.com/2019/06/18/opinion/facebook-court-pr...A very interesting dialog between a US District court judge and a Facebook lawyer on how Facebook feels about privacy.
It seems that when pressed, Facebook says that as soon as you have shared anything to anyone, even if you have your sharing settings tightly controlled, you have no expectation of privacy with regard to that information.
