We obviously need a commission that determines what things are facts and which things are fiction. It will be comprised of experts who know more than the populace, so it will be much better. It will be called the Ministry of Truth.
The radio, print, and television media have laws concerning what they can publish. I don't think it's so incredibly impossible to imagine that the new technology which is replacing those old forms, might also have something in the spirit of those older laws. Also consider: Facebook is already censoring what you see, it's just censoring to show you things you will like.
