Gizmo's freeware has a post on how to clean them up.
How to Clean up Your Old Social Media PostsClean up your social media without deleting your account.
With social media so prevalent it’s a good idea to clean up old posts and photos. Maybe there are posts that a potential employer wouldn’t appreciate, or your views have changed. If you have a long social media history, cleaning up old material and photos can give your social media accounts a clean look...
Have you ever done an audit of your past posts on social media?