You can't block mark zuckerberg on facebook.You can block family,friends and even the president of the United states on facebook,but there's on person you can't-Mark Zuckerberg.Users attempting to rid themselves of the facebook CEO are told they can only send in a report if the person goes against facebook community standards.Facebook says that in fact,it's not because Zuckerberg is the head if the social media giant,but a special feature that has been activated in his profile after a widespread campaign by users to block him.Haha!