You Posted What???
Please use common sense.
I imagine even the most computer and interweb illiterate of society understands that if their profile is set to public - everyone will see what you post.
You want to know the one thing worse than that?
When you are posting with the correct settings but people who can use that evidence against you are able to see what you are posting.
Moral of the Story:
Please think before you post to social media