https://www.cnet.com/news/criminal-defendants-could-get-access-to-facebook-user-content-court-rules/

The high court rejected an appellate court's ruling that providers were prohibited from disclosing communications configured by the user to be public and that remained public at the time defendants subpoenaed the information.

The case centers on a pair of San Francisco murder defendants who want access to videos and other content posted to Facebook and Instagram by the victim and a witness. They also sought information from Twitter.