What can I do ?if someone post dirty pictures on Facebook

I am assuming that you mean that he pictures that have been posted are of you that are now on Facebook? if this is the correct assumption, then here is what to do:

1. with the page in front of you of the picture you are viewing, you need to go to contact support for offensive picture
2. for what reason the picture is offensive, you enlist other and then explain that this photo is of you and that the person did not have your authorization to upload such offensive photo of yourself.
3. if the person that did this is someone you know, then deal with that person one on one, but still report them, they will probably be banned from the site.
4. if the person is not someone you know, then also contact the police department and get this on a police report
5. you can have the attorney that you hire, subpoena Facebook so that they will expose the IP address of the person that did this unlawful act. then with the ip exposed, you can slap a lawsuit on this person for the pain and suffering it has caused. Good luck, best of luck, and let us know how it all turns out!

p.s. if the police tell you that you cannot file a report, tell them they are wrong and here is the link to prove it from many attorneys

Is it illegal for someone to post pictures of you on the internet...