If you DO mind thats on you to 'mind your own business' as the Bible says...not to be a busybody in other peoples matters.
When you post on facebook ANYBODY who also uses facebook can see and comment, its not private, and businesses, conspiracy theorists and yes people with garbage are actually free to go on your page and post anything they like. Thats what you sign up for. You can delet your own things but you can only 'ignore' others.
You are better off away from it. By posting more about it, you only draw MORE attention to it. lol